Update: remove common type wrappers and use typedef instead of '#define'

Update: remove common type wrappers and use typedef instead of '#define'

I intend to begin transitioning from the core types like 'int', 'char', etc...
As part of this, I need to remove a number of the type #define wrappers.
This is also done, in part, because I learned that there are some equivalents to f_min_s_int.

Using explicit types is safer and better designed than something like 'char'.
The goal will be to replace 'char' with uint8_t (or int8_t as needed).

Furthermore, specifying int32_t and int64_t (and similar) should improve the code quality.
The use of types like "wchar", is dangerous because some systems use different sizes.
Instead, for something like "wchar", an uint32_t, might be used.
(although this project is to be designed around UTF-8 so the use of wchar is wrong anyway but it does make good example.)