extopts: Added support for long int and long long int types.
extopts: Types long int and long long int are renamed to lint and
llint.

This way is mode compact. Also unsigned types are expected so this it
will be more convinient for ullint instead of full notation.
extopts: Added unsigned int types.

New types: uint, ulint, ullint.
extopts: Integer types setter refactoring.
extopts: Added support for floating-point types.

New types: float, double, ldouble.
extopts: Praser errors print calls redirected to stderr.