[empathy] Use gmodule-export-2.0 so introspecting ourselves works

[Sjoerd Simons <sjoerds src gnome org>]

commit 656ba0f01d0a55af0c07d2d76e8e9d17502b12b6
Author: Sjoerd Simons <sjoerd simons collabora co uk>
Date:   Tue Aug 24 21:38:04 2010 +0200

    Use gmodule-export-2.0 so introspecting ourselves works

 configure.ac |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 208fcbf..10a4fc1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -156,6 +156,7 @@ PKG_CHECK_MODULES(EMPATHY,
    gio-unix-2.0 >= $GLIB_REQUIRED
    gnome-keyring-1 >= $KEYRING_REQUIRED
    gnutls >= $GNUTLS_REQUIRED
+   gmodule-export-2.0
    gobject-2.0
    gstreamer-0.10
    gstreamer-interfaces-0.10