bootanimation: performance enhancements

This patch implements two simple performance enhancements, which
might benefit devices. They are completely opt-in by setting
the following variables.

  * TARGET_BOOTANIMATION_PRELOAD: will preload the bootanimation
    zip to memory; this is handy on devices where the storage
    might be slow. By preloading it, we get quick access to the
    zip file, and the animation doesn't stutter.

  * TARGET_BOOTANIMATION_TEXTURE_CACHE: allows maintainers to
    force texture cache on/off.

Also fixes the sign warnings related to int / size_t comparison

Change-Id: Ie92d1b0aa90b43ba39c368a2a33657a60c3a64b5
remove leak WaitResult List in startActivityMayWait

Change-Id: If169ef4474a6a38eb2957c806c6e7f8f7ce67783
Signed-off-by: Young-ho Cha <ganadist@gmail.com>
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>
BlackDino's JB Fixer
framework-res: Remove gingerbread scrolls
modify config values in frameworks and systemUI

Change-Id: I32b884b032e0ddeb701103e361840559daea2a2b