[gegl-gtk] Build: Use GTK+3 by default instead of GTK+2

[Jon Nordby <jonnor src gnome org>]

commit 0ac8b36284a8294b0c50c0f4597eb797a8988f46
Author: Jon Nordby <jononor gmail com>
Date:   Tue Jan 15 22:32:43 2013 +0100

    Build: Use GTK+3 by default instead of GTK+2
    
    It has been out forever, so about time. GTK+2 compatibility
    expected to stay around for a while though.

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 89bde95..16cd1da 100644
--- a/configure.ac
+++ b/configure.ac
@@ -191,12 +191,12 @@ PKG_CHECK_MODULES(GEGL, gegl-0.2 >= gegl_required_version)
 ######################################
 AC_MSG_CHECKING([which gtk+ version to compile against])
 AC_ARG_WITH([gtk],
-	[AS_HELP_STRING([--with-gtk=2.0|3.0],[which gtk+ version to compile against (default: 2.0)])],
+	[AS_HELP_STRING([--with-gtk=2.0|3.0],[which gtk+ version to compile against (default: 3.0)])],
 	[case "$with_gtk" in
 	2.0|3.0) ;;
 	*) AC_MSG_ERROR([invalid gtk version specified]) ;;
 	esac],
-	[with_gtk=2.0])
+	[with_gtk=3.0])
 	AC_MSG_RESULT([$with_gtk])
 
 have_gtk="no"