Spigot patch: 0044 Anvil Exploit Fix

https://github.com/EcoCityCraft/Spigot/blob/c7cc53537f4b0e89a2f273cb98e471c42c3fb1bd/CraftBukkit-Patches/0045-Anvil-Exploit-Fix.patch
Spigot patch update: Update netty to 4.0.0.CR1

https://github.com/EcoCityCraft/Spigot/commit/c7cc53537f4b0e89a2f273cb98e471c42c3fb1bd