[f-spot] check for gtk+-2.16 (not used, but checked in gtk#beans)

[Stephane Delcroix <sdelcroix src gnome org>]

commit 93356f9be404829c26763691e5cc7888594f7795
Author: Stephane Delcroix <stephane delcroix org>
Date:   Mon Sep 21 13:54:24 2009 +0200

    check for gtk+-2.16 (not used, but checked in gtk#beans)

 configure.ac |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5f62c17..319f5c0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -132,6 +132,9 @@ else
   fi
 fi
 
+if pkg-config --at-least-version=2.16 gtk+-2.0; then
+	CSC_DEFINES="$CSC_DEFINES -d:GTK_2_16"
+fi
 
 PKG_CHECK_MODULES(BEAGLE, beagle-0.0 >= $BEAGLE_REQUIRED,
 [