More fixes

[josephcsible]

• Fix accidental fall-through in switch statement
• Make a bunch of methods static
• Make getMemoryOffset throw if there's a problem
• Add some @SuppressWarnings("ignore") annotations
• Remove unnecessary casts
• Remove unnecessary "throws" declarations
• Only test getMemoryOffset on things that it's allowed to be called with
• Remove unused variables

[frodare]

I have some code changes dealing with memory addressing that need to be merged in before this one. I am hoping the conflicts will be minimal though.

[frodare]

No conflicts!