[gnome-shell] Bump version to 2.28.0

[Owen Taylor <otaylor src gnome org>]

commit 992b43f9141b89d5f04f85742e25102fe9695951
Author: Owen W. Taylor <otaylor fishsoup net>
Date:   Wed Oct 7 19:07:05 2009 -0400

    Bump version to 2.28.0

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 736051f..40d970b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT(gnome-shell, 2.27.3)
+AC_INIT(gnome-shell, 2.28.0)
 
 AC_CONFIG_AUX_DIR(config)