ZygoteInit: increase GC threshold amount when preloading to postpone GC

todo: instead of hardcoding this number.. make it dependent on the amount
set for heapgrowthlimit in the build.prop. for now we'll just turn it "off".

Change-Id: I7a6e195b82ebe2f4bd5bbb506e19200d452fa3e5
[2/2] Frameworks: HALO

Forward port from jb.
PS1: Initial port
     Fix conficts with notification LED
     Fix derp
     Major derp
     HALO Mods
     Rebase
     Fix blackist, code clean and added some TODOs
PS2: Fix build
PS3: Fix bubble sometimes doesn't respond on new notification
PS4: Align halo icon
PS5: Keep floating app in recents and disable transparent layer temporarily
PS6: Fix conflict after recent merges
PS7: Cosmetic fixes:
* Fix buttons layout in status bar.
* Status bar button holders show halo + qs switch on notification and qs edit mode + notification switch on qs.
* Update new margins size.

Change-Id: I3e79945433d61da090ca263f4e2989be9987f11d