Added some helper logging functions
Added a completely new constants class, C

1. Much cleaner system than the previous constants.
2. Nothing is renamed to 'C' yet, however.
Added start of a real configuration system

1. Stub load function that just loads the defaults, for now.
Added a class Screen to wrap around the screen

1. Handles resolutions, scaling, translating points, etc.
Updated main to the upcoming refactoring