HALO cleanup

hdpi and mdpi drawables were inconsistent, if you plan to use HALO on
lower res devices you must reproduce them.

Change-Id: I2746837bacd60c3079ace4c7523a68b8cd415f5f
Merge branch 'jellybean' of github.com:ParanoidAndroid/android_frameworks_base into jellybean-legacy
Merge remote-tracking branch 'pa/jellybean-legacy' into sgs2
Revert "HALO cleanup" (partly, keep hdpi/mdpi images for now)

This reverts commit 4f4dd8dceaeafa182d75606f7c3adf59b37d973d.