contrib/harfbuzz: work-around build system stupidity breaking clang compilation

(cherry picked from commit 4588b01c03fe8c62048cad31a894cbf9fe09c65d)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

contrib/src/harfbuzz/harfbuzz-clang.patch

+--- harfbuzz/configure.ac	2013-07-16 22:04:08.000000000 +0200
++++ harfbuzz/configure.ac	2014-03-12 14:46:36.000000000 +0100
+@@ -80,13 +80,6 @@
+ 			CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
+ 		;;
+ 	esac
+-
+-	case "$host" in
+-		arm-*-*)
+-			# Request byte alignment on arm
+-			CXXFLAGS="$CXXFLAGS -mstructure-size-boundary=8"
+-		;;
+-	esac
+ fi
+ 
+ AM_CONDITIONAL(HAVE_GCC, test "x$GCC" = "xyes")

contrib/src/harfbuzz/rules.mak

@@ -16,6 +16,7 @@ harfbuzz: harfbuzz-$(HARFBUZZ_VERSION).tar.bz2 .sum-harfbuzz
 	$(UNPACK)
 	$(UPDATE_AUTOCONFIG)
 	$(APPLY) $(SRC)/harfbuzz/harfbuzz-aarch64.patch
+	$(APPLY) $(SRC)/harfbuzz/harfbuzz-clang.patch
 	$(MOVE)
 
 DEPS_harfbuzz = freetype2 $(DEPS_freetype2)