Added test whether pure function calls impure function

[mwetter]

This closes #607

[mwetter]

Before merging, some models need to be corrected, and perhaps MSL need to be updated to 4.1. The output of the OpenModelica tests with this added check is

*** Warning: Buildings.Fluid.Geothermal.Borefields.Validation.Sandbox: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.DHC.ETS.Combined.Validation.ChillerBorefield: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.ClusterBoreholes_100boreholes: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_SmallScaleValidation: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.DHC.Examples.Combined.SeriesConstantFlow: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.DHC.Examples.Combined.SeriesVariableFlow: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_1borehole_5meters: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.DHC.Examples.Combined.SeriesVariableFlowAgentControl: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Fluid.Geothermal.Boreholes.Examples.UTube: [/tmp/tmp-Buildings-10-ggmqnrlw/Buildings/Fluid/Geothermal/Boreholes/BaseClasses/temperatureDrop.mo:2:1-109:20:writable] Warning: Pure function 'Buildings.Fluid.Geothermal.Boreholes.BaseClasses.temperatureDrop' contains a call to impure function 'Buildings.Fluid.Geothermal.Boreholes.BaseClasses.exchangeValues'.
*** Warning: Buildings.Fluid.Geothermal.Boreholes.BaseClasses.Examples.SingleUTubeBoundaryCondition: [/tmp/tmp-Buildings-11-ziv2pr58/Buildings/Fluid/Geothermal/Boreholes/BaseClasses/temperatureDrop.mo:2:1-109:20:writable] Warning: Pure function 'Buildings.Fluid.Geothermal.Boreholes.BaseClasses.temperatureDrop' contains a call to impure function 'Buildings.Fluid.Geothermal.Boreholes.BaseClasses.exchangeValues'.
*** Warning: Buildings.Fluid.Geothermal.Boreholes.BaseClasses.Examples.BoreholeSegment: [/tmp/tmp-Buildings-12-vtlvreqc/Buildings/Fluid/Geothermal/Boreholes/BaseClasses/temperatureDrop.mo:2:1-109:20:writable] Warning: Pure function 'Buildings.Fluid.Geothermal.Boreholes.BaseClasses.temperatureDrop' contains a call to impure function 'Buildings.Fluid.Geothermal.Boreholes.BaseClasses.exchangeValues'.
*** Warning: Buildings.Utilities.IO.Files.Examples.Printer: [/tmp/tmp-Buildings-12-vtlvreqc/Buildings/Utilities/IO/Files/BaseClasses/printRealArray.mo:2:1-45:19:writable] Warning: Pure function 'Buildings.Utilities.IO.Files.BaseClasses.printRealArray' contains a call to impure function 'Modelica.Utilities.Streams.print'.
*** Warning: Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.ThermalZones.EnergyPlus_24_2_0.Examples.SingleFamilyHouse.HeatPumpRadiantHeatingGroundHeatTransfer: [/tmp/tmp-Buildings-16-l0fc2ofh/Buildings/Fluid/Geothermal/Boreholes/BaseClasses/temperatureDrop.mo:2:1-109:20:writable] Warning: Pure function 'Buildings.Fluid.Geothermal.Boreholes.BaseClasses.temperatureDrop' contains a call to impure function 'Buildings.Fluid.Geothermal.Boreholes.BaseClasses.exchangeValues'.
*** Warning: Buildings.Fluid.Geothermal.Borefields.Examples.RectangularBorefield: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Obsolete.ThermalZones.EnergyPlus_9_6_0.Examples.SingleFamilyHouse.HeatPumpRadiantHeatingGroundHeatTransfer: [/tmp/tmp-Buildings-17-7d2irxya/Buildings/Fluid/Geothermal/Boreholes/BaseClasses/temperatureDrop.mo:2:1-109:20:writable] Warning: Pure function 'Buildings.Fluid.Geothermal.Boreholes.BaseClasses.temperatureDrop' contains a call to impure function 'Buildings.Fluid.Geothermal.Boreholes.BaseClasses.exchangeValues'.
*** Warning: Buildings.Fluid.Geothermal.Borefields.Examples.Borefields: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.DHC.ETS.Combined.Examples.ChillerBorefield: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Utilities.Clustering.Validation.KMeans_2d: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Utilities.Clustering.Validation.KMeans_1d: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.LoadAggregation.Validation.TemperatureResponseMatrix: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.Validation.Analytic_20Years: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.DHC.ETS.Combined.Subsystems.Validation.Borefield: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.Validation.Measured_SmallScale: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.Validation.FiniteDifference_1Week: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.
*** Warning: Buildings.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes: [/home/mwetter/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'.