directfb: bump to version 1.4.13

There's an even newer stable release available (1.4.14), but it
has problems with cross-compilation that we are still resolving
on the directfb-dev mailing-list.

[Peter: rename ppc patch to match]
Signed-off-by: Sven Neumann <s.neumann@raumfeld.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/directfb/directfb.mk

@@ -4,7 +4,7 @@
 #
 #############################################################
 DIRECTFB_VERSION_MAJOR = 1.4
-DIRECTFB_VERSION = $(DIRECTFB_VERSION_MAJOR).11
+DIRECTFB_VERSION = $(DIRECTFB_VERSION_MAJOR).13
 DIRECTFB_SITE = http://www.directfb.org/downloads/Core/DirectFB-$(DIRECTFB_VERSION_MAJOR)
 DIRECTFB_SOURCE = DirectFB-$(DIRECTFB_VERSION).tar.gz
 DIRECTFB_AUTORECONF = YES