[gegl] configure: added warning that --enable-mt is unstable

[Øyvind Kolås <ok src gnome org>]

commit 4c97bbd0c8a84261a09ff5d41313a115dd5a90b3
Author: �yvind Kolås <pippin gimp org>
Date:   Sun Jan 10 15:14:39 2010 +0000

    configure: added warning that --enable-mt is unstable

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 0e965a9..d651c4e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -187,12 +187,12 @@ fi
 
 AC_MSG_CHECKING([whether to enable multi threading])
 AC_ARG_ENABLE(mt,
-              [  --enable-mt             turn on multi-threading (default=no)],
+              [  --enable-mt             turn on multi-threading (unstable, default=no)],
 )
 if eval "test x$enable_mt = xyes"; then
     AC_DEFINE(ENABLE_MT, 1, [Defined to 1 if multi-threading is enabled.])
     AC_MSG_RESULT([yes])
-    enable_mt="yes"
+    enable_mt="yes (WARNING: unstable)"
 else
     enable_mt="no"
     AC_MSG_RESULT([no])