I have historically made prototypes for argument-less functions
with just plain `()` for the argument list. This has caused some
minor pains when using `m2c` and is, pendatically, incorrect.
So I have changed all argument-less function protoypes to instead
have `(void)` as the argument list. This required a couple small
fixes here and there.
* Add a lot of header files
Did my best to move all relevant function prototypes and external
variable declarations into the header files too.
Matched a few functions in the process
* Updated progress.py
Some of the listed files/folders have been deleted/renamed,
so I reflected those changes in progress.py
Signed-off-by: Taggerung <tyler.taggerung@gmail.com>