Fixed the check for caddr_t definition (or typedef) to work with glibc.
Fixed the check for caddr_t definition (or typedef) to work with glibc.

svn path=/trunk/; revision=1339

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