allow config.cache or -C on libedit

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@7200 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/libedit/configure.ac

@@ -16,6 +16,8 @@ case $host in
    *-sun-*) AC_DEFINE([_SUNOS], [], [Solaris's term.h does horrid things.]);;
 esac
 
+CFLAGS="$CFLAGS -D_XOPEN_SOURCE=600 -D_BSD_SOURCE=1"
+
 # Checks for programs.
 AC_PROG_CXX
 AC_PROG_CC

libs/libedit/configure.gnu

 #! /bin/sh
-./configure "$@" CFLAGS="$CFLAGS -D_XOPEN_SOURCE=600 -D_BSD_SOURCE=1" --disable-shared --with-pic
+./configure "$@" --disable-shared --with-pic