test program to find out if we are using gnu libc2. Build a small test
program to determine the version of motif/lesstif being used. Use the
output of these to set flags used in the xfe. See config/Makefile for
comments.
git-svn-id: svn://10.0.0.236/trunk@4563 18797224-902f-48f8-a5cc-f745e15eee43
