Only allow whitelisted exceptions during dex2oat resolving.

Previously we would clear any exceptions even though we only want
to clear NoClassDefFound and IncompatibleClassChangeError exceptions.
This meant that out of memory exceptions would incorrectly get
cleared resulting in excessively long dex2oat times when you ran out
of memory.

Bug: 15936401
Change-Id: Iba3911f2c689b8c8d7d41e8c36546f027c08e9d7