Make our tests only 2x slower than they were this morning...
Make our tests only 2x slower than they were this morning...

...by disabling the expensive heap checks that made us 6x slower.

Change-Id: I049db7ab256214b79d67586e1f70bbf7a1936608

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