libgtk2: change download site

Use the Gnome FTP server as the download site, like we do for other
components of the Gtk stack.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libgtk2/libgtk2.mk

@@ -8,7 +8,7 @@ LIBGTK2_VERSION_MINOR:=4
 LIBGTK2_VERSION = $(LIBGTK2_VERSION_MAJOR).$(LIBGTK2_VERSION_MINOR)
 
 LIBGTK2_SOURCE = gtk+-$(LIBGTK2_VERSION).tar.bz2
-LIBGTK2_SITE = ftp://ftp.gtk.org/pub/gtk/$(LIBGTK2_VERSION_MAJOR)
+LIBGTK2_SITE = http://ftp.gnome.org/pub/gnome/sources/gtk+/$(LIBGTK2_VERSION_MAJOR)
 LIBGTK2_AUTORECONF = NO
 LIBGTK2_INSTALL_STAGING = YES
 LIBGTK2_INSTALL_TARGET = YES