#1 Input handling code is a mess

[David Leaver]

The input handling code is a mess which makes doing things like a button that works in every CurrentInputable/GameControlState very difficult.
This should be refactored somehow.

Also the PSP vs PC input code could possibly be handled nicer....

[David Leaver]

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Most of the way through re-working this.
Just need to code the small PSP Specific portion. :)