Update 1.7/build 9

The fifth Beta of Update 1.7. See changelog.

Fixes

 * Fixed several crashes that occurred during gameplay.
 * Fixed a crash that could occur when applying a Resource Pack.
 * Fixed a crash for connected players riding a Pig in multiplayer.
 * Fixed player permission issues that prevented players from building or mining.
 * Fixed a bug where many mobs would have broken models in some marketplace worlds.