Honor toolchain name in output folder.

Without this change glibc targets would always end up on the
newlib build folder.

BUG=

Review URL: https://codereview.chromium.org/11358127

git-svn-id: https://nativeclient-sdk.googlecode.com/svn/trunk/src@1464 050acbb0-2703-11df-ab0a-9f3f633ae91d
2 files changed