Final 1.8 Minecraft.yaml Update

Fixes cauldrons, added rotations for common blocks, added enderchest bottom.
Final 0.8.0 pocket.yaml update

Will also send pull request updated terrain-pocket.png(tested)
Syntax Fixes

Removed 2 unnecessary line breaks and removed a double tex: definition from chests.
Merge pull request #159
Merge pull request #160
Pocket: Fixed water, sandstone, quartz textures
Gave melon slice item a name distinct from the melon block
Merge branch 'master' of github.com:intchanter/pymclevel