General cleanup of comments, defines, includes, and global variables, removed those...

General cleanup of comments, defines, includes, and global variables, removed those that arent needed, grouped those remaining at the top.
Re-ordered functions to the order they are called.
Removed static crc table, it now generates the table once for itself.
Results in source reduced by 40%, so it should be a lot easier to work on in the future, binary size only reduced by under 2KB though.