[gnome-themes-standard] Set GTK_VERSION in configure.in

[Matthias Clasen <matthiasc src gnome org>]

commit b4d5efa91b47df99e58cc60f410b0cb9bbb71771
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jan 19 09:36:47 2011 -0500

    Set GTK_VERSION in configure.in
    
    I forgot to copy this from gtk-theme-engine-clearlooks

 configure.ac |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 3f58820..71b8efa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -35,6 +35,9 @@ PKG_CHECK_MODULES(GTK, gtk+-3.0 >= 2.91.6,,
 AC_SUBST(GTK_CFLAGS)
 AC_SUBST(GTK_LIBS)
 
+GTK_VERSION=`$PKG_CONFIG --variable=gtk_binary_version gtk+-3.0`
+AC_SUBST(GTK_VERSION)
+
 # Workaround to make aclocal get the right flags
 AC_SUBST(ACLOCAL_AMFLAGS, "\${ACLOCAL_FLAGS}")