Merge "Revert "Make run-test default to optimizing compiler.""
am: d8cd1c83f9

* commit 'd8cd1c83f9fe7637494f7a65807289041d2fb7d3':
  Revert "Make run-test default to optimizing compiler."

Change-Id: Iaacc8c81927b126bd9858ca71731aa68cc15f3b2