[gedit] build: GtkSourceView >= 3.15.3 is required

[Sébastien Wilmet <swilmet src gnome org>]

commit 8c6d79785d2f8583daafae3a0990e81416952536
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Wed Dec 31 11:45:46 2014 +0100

    build: GtkSourceView >= 3.15.3 is required
    
    Currently the git master branch (not yet released).

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 0bd3101..b364ab8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,7 +16,7 @@ AC_INIT([gedit],
 # Dependencies
 GLIB_REQUIRED=2.40.0
 GTK_REQUIRED=3.14.0
-GTKSOURCEVIEW_REQUIRED=3.14.0
+GTKSOURCEVIEW_REQUIRED=3.15.3
 LIBPEAS_REQUIRED=1.7.0
 LIBXML_REQUIRED=2.5.0
 ENCHANT_REQUIRED=1.2.0