Re-order commands so we get the proper ssl version on AIX.

configure.ac

@@ -23,8 +23,6 @@ AM_INIT_AUTOMAKE(slurm, $VERSION)
 AM_CONFIG_HEADER(config.h)
 AM_CONFIG_HEADER(slurm/slurm.h)
 
-X_AC_AIX
-
 dnl Checks for programs.
 dnl
 AC_PROG_CC
@@ -33,6 +31,7 @@ AC_PROG_MAKE_SET
 AC_PROG_LIBTOOL
 
 CFLAGS=
+X_AC_AIX
 
 AM_CONDITIONAL(WITH_GNU_LD, test "$with_gnu_ld" = "yes")