gcc -MM needs -I. to work properly now with new style plplot/*.h header file locations.
gcc -MM needs -I. to work properly now with new style plplot/*.h header file
locations.

svn path=/trunk/; revision=2292

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