Removed the .java file from the resources folder.
Fixed not flipping the center plane blocks.

Added regression test so we'll never have to deal with it again.
Code formatting.
Fixed door rotation and disabled door y flipping.

Mojang radically changd the way doors work, so y flipping on a per-block
basis is now impossible.
Fixed bed rotation.
Fixed lever rotation.
Fixed head rotation.
Made hay blocks rotate like logs.

They're textured like them, too, so it fits.
Also, they no longer violate the "flip twice equals rotate twice" conditions.
Merge pull request #267 from sk89q/rotating

Block rotation/flip fixes and removed MCPCPlusXNmsBlock_151dv.java from resources/