Improved RPATH handling. Permissions fixup.  Add a link to the octinterp library which is required to resolve some symbols.
Improved RPATH handling. Permissions fixup.  Add a link to the octinterp
library which is required to resolve some symbols.

svn path=/trunk/; revision=7089

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