Tracking merge of dalvik-dev to gingerbread

git cherry-pick --no-commit f77cf7f0
git cherry-pick --no-commit c8f503b5
git cherry-pick --no-commit 570bb561
git cherry-pick --no-commit e2417541
git cherry-pick --no-commit e4d81f25
git cherry-pick --no-commit 5e8a587d

Change-Id: I101a385d43f3e0f4ce5352217f92ef67a3908c88