Fix make draft and watermark

[huhong789]

No description provided.

[stevenskevin]

For reference, 0592ad5 fixes the following error when running make draft:

pkgs.tex:28: error: [minted] You must invoke LaTeX with the -shell-escape flag
      at 
p.tex:26: error: [minted] You must have `pygmentize' installed to use this package
      at \begin{document}

because $(LTEX) adds the needed -shell-escape flag.

But for me, e33756b only causes new breakage:

latex.out/p.aux:24: error: Undefined control sequence
      at \@LN@col{2}
                 ^
latex.out/p.aux:24: error: Missing \begin{document}
      at \@LN@col{2}
                   ^
latex.out/p.aux:25: error: Undefined control sequence
      at \@LN@col{1}

[huhong789]

e33756b is for gpoore/minted#183

No new breakage on my machine, did you try "make clean & make"? or maybe documenclass could be different

[stevenskevin]

Oh, you're right, it works after a make clean. My mistake, I'll close the other PR in favor of this one.