[gnome-terminal] build: Allow gtk_settings_reset_property to be used

[Debarshi Ray <debarshir src gnome org>]

commit b8a643d46678864138611930041f38817a9679f3
Author: Debarshi Ray <debarshir gnome org>
Date:   Mon Apr 18 12:20:48 2016 +0200

    build: Allow gtk_settings_reset_property to be used
    
    https://bugzilla.gnome.org/show_bug.cgi?id=765201

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 0ef1bb0..815559d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -58,7 +58,7 @@ case "$with_gtk" in
   3.0) GTK_API_VERSION=3.0
        GTK_REQUIRED=3.12.0
        GTK_MIN_REQUIRED=3.8
-       GTK_MAX_ALLOWED=3.14
+       GTK_MAX_ALLOWED=3.20
        VTE_API_VERSION=2.91
        VTE_REQUIRED=0.45.0
        ;;