tvheadend: remove -Werror from CFLAGS

Remove -Werror from CFLAGS to avoid build failures caused by warnings.

Fixes the following autobuild failure on MIPS64 n32/64:

   http://autobuild.buildroot.net/results/6be/6be075726ac6db0a48dd6b535841ada932c9ffbb/

Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/tvheadend/tvheadend-003-remove-werror.patch

@@ -0,0 +1,15 @@
+tvheadend: remove -Werror from CFLAGS
+
+Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
+
+--- tvheadend-2b649954346aa2e9c81834d500a25c528f31f829/Makefile.orig	2013-11-28 15:52:52.284041848 +0000
++++ tvheadend-2b649954346aa2e9c81834d500a25c528f31f829/Makefile	2013-11-28 15:53:03.715220194 +0000
+@@ -27,7 +27,7 @@ PROG    := $(BUILDDIR)/tvheadend
+ # Common compiler flags
+ #
+ 
+-CFLAGS  += -Wall -Werror -Wwrite-strings -Wno-deprecated-declarations
++CFLAGS  += -Wall -Wwrite-strings -Wno-deprecated-declarations
+ CFLAGS  += -Wmissing-prototypes -fms-extensions
+ CFLAGS  += -g -funsigned-char -O2 
+ CFLAGS  += -D_FILE_OFFSET_BITS=64