Log Message:
Fix various package list problems:
1.) Remove directory "share/gnuplot/4.2/PostScript" during deinstallation.
2.) Prevent installation of "share/texmf-local/tex/latex/gnuplot" if
    LaTeX is available (because we don't want to depend on "tetex").
3.) Update package list of "gnuplot-nox11" for version 4.2.

Bump revision of both packages.