mpz_set_str(): definition

[Petr Tesarik]

Hello,

I'm sending my opinion on changing the definition of mpz_set_str.
(See http://www.swox.com/gmp/manual/Assigning-Integers.html if you wonder why.)

I use GMP for cryptography. I don't really care whether it accepts
white space, as I never ever feed it with such a string. However, I
think it _should_ definitely fail, because a number with white space
in it is _not_ valid. I would appreciate another function though, which
would return _where_ the first invalid character is -- just like those
standard "C" functions strtol() and friends do.

GMP is excellent, at least for me. Keep on good work!

Petr Tesarik