(strtold): Remove weak alias. * stdlib/strtof.c (STRTOF): Set to strtof, not __strtof. (strtof): Remove weak alias.
[IMPLICIT_ONE]: New macro, one for IEEE754 formats. * stdlib/strtold.c [IMPLICIT_ONE]: New macro, 0. * stdlib/strtof.c [IMPLICIT_ONE]: New macro, 1. * stdio/vfprintf.c: Correctly notice Z modifier.