Fix contribs building for FFmpeg

--
Rafaël Carré <rcarre@m2x.nl>

commit dc9057ec9b4bb41a74bb07197c64cee8c1976fe0
Author: Rafaël Carré <funman@videolan.org>
Date:   Mon May 19 10:08:04 2008 +0200

    Do not install swscale headers if it was not enabled
Signed-off-by: Jean-Paul Saman <jpsaman@videolan.org>

.gitignore

@@ -9,6 +9,8 @@ configure
 intl
 libtool
 Makefile
+!extras/contrib/Makefile
+!extras/contrib/src/Makefile
 Makefile.in
 stamp-*
 vlc-config

extras/contrib/src/Makefile

@@ -926,6 +926,7 @@ DISTCLEAN_PKG += libmatroska-$(LIBMATROSKA_VERSION).tar.bz2
 
 ffmpeg:
 	$(SVN) co $(FFMPEG_SVN) -r 7407 ffmpeg
+	(cd $@; patch -p 0 < ../Patches/ffmpeg-swscale-headers.patch)
 ifeq ($(HOST),i586-pc-beos)
 	(cd $@; patch -p 0 < ../Patches/ffmpeg-svn-beos.patch)
 endif

extras/contrib/src/Patches/ffmpeg-swscale-headers.patch

+Index: Makefile
+===================================================================
+--- Makefile	(revision 7407)
++++ Makefile	(working copy)
+@@ -159,7 +159,9 @@
+ ifeq ($(CONFIG_PP),yes)
+ 	$(MAKE) -C libpostproc install-headers
+ endif
++ifeq ($(CONFIG_SWSCALER),yes)
+ 	$(MAKE) -C libswscale  install-headers
++endif
+ 
+ uninstall: uninstall-progs uninstall-libs uninstall-headers uninstall-man uninstall-vhook
+