Removed a single unneeded null check

I am proud of myself
Add Entity.rand and XPOrb.xpValue to pcc_at
Merge pull request #11 from skyboy/master

Add Entity.rand and XPOrb.xpValue to pcc_at
Buildfile uses get instead of getMethod for Forge
Fixes to compile on 1.6.1
Move textures to /assets as required by ResourcePack system.
Fix mappings for MCP 8.03.
Update to Forge 775 and change version numbers.
Add proper methods to allow injection as a resource pack.
1.6.2 mapping/Forge update. BC API is horribly broken.
Forge 780, fix ResourceLocation package change.
Forge 804, use javac because recompile.bat hates having scalac installed.
Use asm-debug-all instead of asm-all while building.
Forge 818
Remove InventoryManagerLegacy.java

Forge removed their ISidedInventory interface in favor of the minecraft one.
Remove PowerProviderAdvanced.java

BC API does not include PowerProvider things anymore.
IPipeEntry -> IPipeTile

BC API removed IPipeEntry, the functions on it appear to be now provided by IPipeTile.