Recognize odex files in memory accounting.

Give odex files the same heap category as dex files.

Change-Id: I82539e20ac20a2b80c63c0cfceb266d9c59e22b7
just a lil tweakaroonie to make recents draw with hardware acceleration

Change-Id: I179733ba231af1b45f5608d47cc00a4096643538