libflac: update to 1.3.2, refresh patches

No mention of sigemptyset seen in source code; dropped patch

Signed-off-by: Ian Leonard <antonlacon@gmail.com>

libs/flac/patches/002-no-utility.patch

@@ -2,8 +2,8 @@
 +++ b/src/Makefile.am
 @@ -27,10 +27,7 @@ endif
  SUBDIRS = \
- 	share \
  	libFLAC \
+ 	share \
 -	flac \
 -	metaflac \
  	$(XMMS_DIRS) \