gstreamer1: bump version

And add tarball hash from release announcement.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gstreamer1/gstreamer1/gstreamer1.hash

@@ -0,0 +1,2 @@
+# From http://lists.freedesktop.org/archives/gstreamer-announce/2014-September/000329.html
+sha256	11f155784d28b85a12b50d2fc8f91c6b75d9ca325cc76aaffba1a58d4c9549c9	gstreamer-1.4.3.tar.xz

package/gstreamer1/gstreamer1/gstreamer1.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GSTREAMER1_VERSION = 1.4.1
+GSTREAMER1_VERSION = 1.4.3
 GSTREAMER1_SOURCE = gstreamer-$(GSTREAMER1_VERSION).tar.xz
 GSTREAMER1_SITE = http://gstreamer.freedesktop.org/src/gstreamer
 GSTREAMER1_INSTALL_STAGING = YES