[gnome-tweak-tool] Fix build against pygobject-3.0

[John Stowers <jstowers src gnome org>]

commit b903774ea5e87b2be10c7b6acf4408a9fc77df08
Author: John Stowers <john stowers gmail com>
Date:   Sun Aug 21 11:13:08 2011 +1200

    Fix build against pygobject-3.0

 configure.ac |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 8d27f7c..ad10e1d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,10 +6,11 @@ AM_PATH_PYTHON([2.6])
 GLIB_GSETTINGS
 
 DESKTOP_SCHEMAS_REQUIRED_VERSION=3.0.0
-PYGOBJECT_REQUIRED_VERSION=2.28.0
+PYGOBJECT_REQUIRED_VERSION=2.90.0
 
-PKG_CHECK_MODULES(GSETTINGS_DESKTOP_SCHEMAS, gsettings-desktop-schemas >= $DESKTOP_SCHEMAS_REQUIRED_VERSION)
-PKG_CHECK_MODULES(DEPENDENCIES, pygobject-2.0 >= $PYGOBJECT_REQUIRED_VERSION)
+PKG_CHECK_MODULES([GSETTINGS_DESKTOP_SCHEMAS], [gsettings-desktop-schemas >= $DESKTOP_SCHEMAS_REQUIRED_VERSION])
+PKG_CHECK_MODULES([PYGOBJECT3], [pygobject-3.0 >= $PYGOBJECT_REQUIRED_VERSION)],,
+    [PKG_CHECK_MODULES([PYGOBJECT2], [pygobject-2.0 >= 2.28.0])])
 
 AC_CHECK_PROG(GCONFTOOL,gconftool-2,gconftool-2,no)
 if test "$GCONFTOOL" = no ; then