PYTHON_LIBS is commented out because these libraries do not exist on Linux python-1.5 systems and searching for them bombs the build there.  If other python systems still actually use these libraries must do something fancier.
PYTHON_LIBS is commented out because these libraries do not exist on Linux
python-1.5 systems and searching for them bombs the build there.  If other
python systems still actually use these libraries must do something fancier.

Also, use separate include location for numerical python (which sometimes
is a subdirectory of the usual python include location and sometimes is
identical with the usual python include location).

svn path=/trunk/; revision=2361

FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot