Added a block helper to shield mod code from future changes made by MCP/Mojang.

Started porting to 1.5.
Updated BuildCraft API.
Some work on 1.5.1 version.
Fixed changed names in 1.5 MCP.
Added helper file with comments about 1.5.1 porting.
Update ignore file.
Merge branch 'master' of github.com:mnn/jaffas into mc_1.5.1

Conflicts:
	.idea/workspace.xml
Fixed not-obfuscated mappings and multi-block issues.
Renamed mods, added todo texture.
Renamed mods classes.
Started rewriting all block&items to use implementation from core.
Rewritten food and sword classes to inherit from jaffa base.
Implemented custom item blocks.
Finished item icons.

Added converted pictures of all items and blocks.
Fixed textures for blocks: fridge, bomb, statue.
Updated pies and tables.

Fixed switchgrass (icons and grow updates).
Updated bush seeds and fruits.
Updated fruit collector, saplings and fruit seeds.
Updated textures handling of crops and leaves.

Tree module now uses bonemeal event.
Move classes to proper packages (mostly in xmas module).
Renamed mod classes, items and blocks are now prefixed by "jaffas".