Ensure built toolchain works on Mac OS X 10.5, even when building on 10.6
Ensure built toolchain works on Mac OS X 10.5, even when building on 10.6

Also fix the indentation locally in this part of the file.

BUG=http://code.google.com/p/nativeclient/issues/detail?id=1393
TEST=build-tested on 10.6 and checked executables with "otool -l"

Review URL: http://codereview.chromium.org/6518002

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@4308 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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