[pygtk] Fix autotools conditionals

[John Stowers <jstowers src gnome org>]

commit 099b50a7bed146b289e71fe955d70ead89a54b2f
Author: John Stowers <john stowers gmail com>
Date:   Sat Jun 19 14:40:49 2010 +1200

    Fix autotools conditionals

 configure.ac |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1c22290..89e368c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -362,6 +362,8 @@ else
   AM_CONDITIONAL(HAVE_GTK_2_10, false)
   AM_CONDITIONAL(HAVE_GTK_2_12, false)
   AM_CONDITIONAL(HAVE_GTK_2_14, false)
+  AM_CONDITIONAL(HAVE_GTK_2_16, false)
+  AM_CONDITIONAL(HAVE_GTK_2_18, false)
   AM_CONDITIONAL(BUILD_LIBGLADE, false)
   AM_CONDITIONAL(BUILD_GTKUNIXPRINT, false)
   have_pangocairo=false