[nautilus/gnome-3-20] configure.ac: bump gtk+ version

[Carlos Soriano Sánchez <csoriano src gnome org>]

commit f4d1d464c970509c1371fc726e4a2fab94a49c63
Author: Carlos Soriano <csoriano gnome org>
Date:   Wed Mar 9 18:20:23 2016 +0100

    configure.ac: bump gtk+ version
    
    To latest gtk+ for the sidebar signal.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 97d2f7b..587608b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5,7 +5,7 @@ dnl ===========================================================================
 m4_define(glib_minver,                 2.45.7)
 m4_define(gnome_desktop_minver,        3.0.0)
 m4_define(pango_minver,                1.28.3)
-m4_define(gtk_minver,                  3.19.10)
+m4_define(gtk_minver,                  3.19.12)
 m4_define(xml_minver,                  2.7.8)
 m4_define(exif_minver,                 0.6.20)
 m4_define(exempi_minver,               2.1.0)