libroxml: fix avr32 build failure

The -Wno-unused-result option is not understood by the version of gcc used by the
avr32 toolchain. Remove the option from the compilation flags.

Fixes build failures such as the following.

  http://autobuild.buildroot.net/results/e22/e22d94fca3eabb4e54d82af04319f17ad8e10c20/

The single existing patch for libroxml has been renamed to include a numerical
component for application order sorting. The existing patch has also been updated
to apply without fuzz.

Signed-off-by: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libroxml/libroxml-0001-werror.patch

@@ -11,7 +11,7 @@ Index: a/Makefile
 ===================================================================
 --- a/Makefile
 +++ b/Makefile
-@@ -41,7 +41,7 @@
+@@ -46,7 +46,7 @@
  
  # options
  override CPPFLAGS += -Iinc/

package/libroxml/libroxml-0002-wno-unused-result.patch

@@ -0,0 +1,21 @@
+The -Wno-unused-result option is not understood by the version of gcc used by the
+avr32 toolchain. Remove the option from the compilation flags.
+
+Fixes build failures such as the following.
+
+  http://autobuild.buildroot.net/results/e22/e22d94fca3eabb4e54d82af04319f17ad8e10c20/
+
+Signed-off-by: Simon Dawson <spdawson@gmail.com>
+
+diff -Nurp a/Makefile b/Makefile
+--- a/Makefile	2013-11-21 17:13:17.679388374 +0000
++++ b/Makefile	2013-11-21 17:13:35.219299157 +0000
+@@ -46,7 +46,7 @@ DEFINES = -DIGNORE_EMPTY_TEXT_NODES
+ 
+ # options
+ override CPPFLAGS += -Iinc/
+-override CFLAGS += $(OPTIM) -fPIC -Wall -Wextra -Wno-unused-parameter -Wno-unused-result -Iinc/ $(DEFINES)
++override CFLAGS += $(OPTIM) -fPIC -Wall -Wextra -Wno-unused-parameter -Iinc/ $(DEFINES)
+ override LDFLAGS += 
+ 
+ ifeq ("$(OS)", "Darwin")