HALO : Effect color

Conflicts:

	packages/SystemUI/src/com/android/systemui/statusbar/halo/Halo.java

Change-Id: I5ec95de29c4b30aa8d6a12574eb9db357468cf26
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

Conflicts:

	packages/SystemUI/res/drawable-hdpi/halo_bg.png
	packages/SystemUI/res/drawable-nodpi/bubble_l.9.png
	packages/SystemUI/src/com/android/systemui/statusbar/halo/Halo.java
HALO: new drawables for hdpi and mdpi

- scaled down the xhdpi drawables properly for hdpi and mdpi
- removed some old and unused halo pngs

Conflicts:

	packages/SystemUI/res/drawable-hdpi/halo_bg.png

Change-Id: I6e3010527e8618b5d9ffd272934bed0518001f79
HALO: Option to pause the underlying app (1/2)

- adds an option to pause the active app when using HALO
- this is enabled by default for devices with low memory
- (currently: <640MB RAM available to the kernel)

Conflicts:

	core/java/android/provider/Settings.java

Change-Id: Ief5eac0fb6ffd0b66009df572cfb4c89e02540ad