Moved the basic system tests up before the inclusion of sys{conf,loc}.in to ensure that basic autoconf setup procedures do not get circumvented by the if-else's in sysloc.in.  Fixes problem seen with autoconf 2.54.
Moved the basic system tests up before the inclusion of sys{conf,loc}.in
to ensure that basic autoconf setup procedures do not get circumvented
by the if-else's in sysloc.in.  Fixes problem seen with autoconf 2.54.

svn path=/trunk/; revision=4035

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