Loads of stuff, and ruination.
Added isBlocked() and addBlock() to rooms - preparation for advanced
furniture positioning code.
Merge remote-tracking branch 'jimfinnis/master'

Conflicts:
	Gorm/src/org/pale/gorm/Building.java
	Gorm/src/org/pale/gorm/roomutils/DungeonObjects.java
	Gorm/src/org/pale/gorm/roomutils/Furniture.java