Wrap AR command lines in a temp file as well, in case it gets too long, e.g., for the pnacl windows toolchain bot.
Wrap AR command lines in a temp file as well, in case it gets
too long, e.g., for the pnacl windows toolchain bot.

Previously, this only happened for link commands.

BUG= bot redness
TEST= trybots

Review URL: https://chromiumcodereview.appspot.com/9968063

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@8154 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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