Initial NetherFortGen import.

Simple fortresses of 2 different rooms will generate.
Merge branch 'master' into NetherFortGen
Sponged the netherfort balcony prefab.

This is a preparation for the msSpongePrint merge strategy, used for imprinting most prefabs. It will carve out even air, but will ignore sponge blocks.
Fixed a memory leak in NetherFortGen.
NetherFort: Added BalconyTee2 prefab.
Implemented the msSpongePrint merge strategy.

Similar to msImprint, but allows prefabs to carve out air pockets, too. The sponge block is used as the NOP block.
Merge branch 'master' into NetherFortGen
Added Prefabs to *nix builds.
NetherFortGen: Added several more prefabs.

Also extended the defauls MaxDepth value to 12.
Merge branch 'master' into NetherFortGen
NetherForts have a minimum number of pieces.

The fort will generate a different image if it has less than the minimum; the max depth affects the minimum number of pieces.
Fixed chest rotator.
Re-fixed nether fort piece count check.
Added asserts for critical data in cPrefab.
Added all current NetherFort prefabs.
Merge branch 'NetherFortGen'.