Update: use max_width instead of maxWidth, remove f_utf_bom check from f_is_space...

Update: use max_width instead of maxWidth, remove f_utf_bom check from f_is_space, and provide f_macro_utf_byte_width_is for UTF-8

Cleanup accidental use of maxWidth, when the proper syntax style is instead max_width.

After further review, I have decided to move the f_utf_bom check back outside of the f_is_space() function.

Provide f_macro_utf_byte_width_is() function for getting UTF-8 character widths but returning 0 if the character is ASCII.