Pocket Edition v0.12.2 alpha

Alpha 0.12.2 is a patch to Minecraft: Pocket Edition with a few bugfixes.

Fixes
4 bugs fixed
 * - Lighting render bloom
 * - Diffrent Portals leading to the same Portal in the other dimension
 * - Flower pot duplication
 * Fixed a bug where breaking double tall grass would give off sunflower particles.