toolchain_build: Fix stripping of objects and archives so they remain usable
toolchain_build: Fix stripping of objects and archives so they remain usable

The stripping changes were a bit too aggressive: they were doing full
stripping of .a and .o files, which makes them unusable for linking.
We want full stripping of any linked objects, but only strip-debug for
any relocatable objects.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=3086
TEST= trybots

R=bradnelson@google.com

Review URL: https://codereview.chromium.org/11416321

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@10363 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client