Revert "Revert "gcc-4.9: move binaries to find build breakages""

This reverts commit e34c3e0c3e2008aece6e2bdb92e0fbdfaeaff626.

Reason for revert: no darwin x86 targets failed
Bug: 147240075
Change-Id: I5e831589507f15b4a4410342ad1f53dfd07c46d6
8 files changed