[epiphany] Require WebKitGTK+ 2.15.1

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 152ae0dfedec4aac3cee77a3edb98725dc2121ad
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Wed Oct 26 11:27:43 2016 -0500

    Require WebKitGTK+ 2.15.1

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 51fba56..bc5d81a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -94,7 +94,7 @@ LT_LIB_M
 
 GLIB_REQUIRED=2.44.0
 GTK_REQUIRED=3.22.0
-WEBKITGTK_REQUIRED=2.13.2
+WEBKITGTK_REQUIRED=2.15.1
 
 PKG_CHECK_MODULES([CAIRO], [cairo >= 1.2])
 PKG_CHECK_MODULES([GCR], [gcr-3 >= 3.5.5])