Increased Type safety of Biomes
Changed a number of funcictions from using integers to store biomes to using EMCSBiome
Note that switching from an int to an Enum is a non-breaking chang to the lua bindings
Removed unused lookups
Fixed Compile errors

c++11 introduces scoped enums, so the code didn't fail in clang
Fogot to save Biogen
Merge pull request #636 from worktycho/warningfixes

Increased Type safety of Biomes