Increase scroll speeds

AOKP PS:
This does not increase touch sensitivity as advertised, it does, however
increase the speed of scrolling giving the feeling of more responsiveness.
Commit message editted to reflect this.

Change-Id: I77e6aeca3667808e630dc142a2e561d3ddddef80
Fix infinite recursive loop

There is an apparent recursive loop at IntProperty.java
in method set(Object, Integer)

This method unconditionally invokes itself. This would seem
to indicate an infinite recursive loop that will result in a stack overflow.

This was brought over from out original JB branch.  Somehow, this got
overlooked, and never made it into JB42.

Change-Id: I344f7d774d4a9c688dda1e10f796def0f503d037
Fix a programmatic smooth scroll bug

Bug: smoothScrollToPosition() stops at child view of which height is
higher than list view itself.

Change-Id: I695ca9db4c706aa7f365967dd3916f9a01917346
Signed-off-by: Yongyi Li <yongyi.li.cn@gmail.com>
frameworks/base: Fix for the race in Wallpaperservice

Wallpaperservice has a race among message handler of
DO_DETACH and service's onDestroy. In certain cases,
the engine kept track in mActiveEngines is removed by
message handler of DO_DETACH and service's onDestroy
doesn't get a entry in mActivieEngines and isn't able
to invoke detach. This keeps the broadcast receiver,
mReceiver active and is unregistered by the framework
and a corresponding leak is reported.

  Later, the message handler of DO_DETACH continues
and invokes detach on mEngine, which attempts to
unregister mReceiver and framework throws an exception
"Receiver not registered: android.service.wallpaper.
WallpaperService$Engine$1@40874580" and causes the
framework to reboot.

  In case of system_server, WindownManagerPolicy and
android.server.ServerThread contest for access of
shared members, mActiveEngines and mEgine. Fix is to
protect the critical section via synchronized block.

Change-Id: Ice79cb8344fb54bcc6e9f76f4b143daac2608d7b
ZygoteInit: increase GC threshold amount when preloading to postpone GC

AOKP PS:
Make more reasonable 5MB
Cleanup language

Change-Id: I7a6e195b82ebe2f4bd5bbb506e19200d452fa3e5