Update: Simplify the f_abstruse types a little.

Update: Simplify the f_abstruse types a little.

Being a union, the single valued integer types provide very little gain and introduce a cost in complexity.
Remove the integer types that overlap and just stick with the f_number_signed_t and f_number_unsigned_t for single value number types.
Multiple valued number types remain because there is potential for design differences due to the memory allocation and size differences.

The f_char_t type is removed.
Just stick with f_string_t.