Fix find_toolchain_revisions.py script
Fix find_toolchain_revisions.py script

The find_toolchain_revisions.py has been broken since the related
modules got the multi-package variants added for the arm-nacl-gcc
toolchain.  This makes the script work like before; it still does
not do anything about the new-style toolchains.

BUG= none
TEST= local run

R=bradnelson@google.com

Review URL: https://codereview.chromium.org/12321116

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@10907 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client