xen: rebuild against nettle-3.6

srcpkgs/xen/template

@@ -1,7 +1,7 @@
 # Template file for 'xen'
 pkgname=xen
 version=4.10.4
-revision=2
+revision=3
 # grep -R IPXE_GIT_TAG src/xen-*/tools/firmware/etherboot
 _git_tag_ipxe=356f6c1b64d7a97746d1816cef8ca22bdd8d0b5d
 archs="x86_64*"
@@ -93,7 +93,6 @@ nostrip_files="
 	palcode-clipper
 	s390-ccw.img
 	s390-netboot.img"
-pycompile_module="xen grub"
 
 CFLAGS="-fno-pie -Wno-format-truncation"
 
@@ -122,7 +121,7 @@ post_extract() {
 pre_configure() {
 	find \( -name "Makefile*" -o -name "*.mk" -o -name "common.make" \) \
 		-exec sed -i "{}" -e "s; *-Werror *; ;g" \;
-	sed -i tools/python/setup.py -e 's;, "-Werror";;g'
+	vsed -i tools/python/setup.py -e 's;, "-Werror";;g'
 }
 
 do_configure() {