add stage3

Author: 2b57

specs/clang/musl/stage1.spec

@@ -11,5 +11,5 @@ portage_overlay: /var/db/repos/musl /var/db/repos/toolchain-clang
 portage_confdir: /var/db/repos/toolchain-clang/releng/releases/portage/stages
 update_seed: yes
 update_seed_command: --update --deep --newuse @world
-compression_mode: pixz
+compression_mode: pixz_x
 

specs/clang/musl/stage3.spec

@@ -0,0 +1,11 @@
+subarch: amd64
+target: stage3
+version_stamp: clang-musl-@TIMESTAMP@
+rel_type: clang-musl
+profile: toolchain-clang:linux/amd64/clang/musl
+snapshot: @TIMESTAMP@
+source_subpath: clang-musl/stage2-amd64-clang-musl-@TIMESTAMP@
+portage_prefix: releng
+portage_confdir: /var/db/repos/toolchain-clang/releng/releases/portage/stages
+portage_overlay: /var/db/repos/musl /var/db/repos/toolchain-clang
+compression_mode: pixz_x