See if running single-threaded fixes dex2oat Mac crashes.
See if running single-threaded fixes dex2oat Mac crashes.

Change-Id: Ic5fce7d5eec47b4051e7c93eb1a739aede3b7634

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst