Eliminated the POSIX thingy, added checks for termios.h & POSIX.1 sys/wait.h.
Eliminated the POSIX thingy, added checks for termios.h & POSIX.1 sys/wait.h.

svn path=/trunk/; revision=2849

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