Also, make the following further changes to make this file's
configuration more similar to that of strtol.c:
(UNSIGNED): Renamed from STRTOUXMAX_UNSIGNED. All uses changed.
(strtoumax, uintmax_t, strtoull, strtol): Remove.
(intmax_t, strtoimax, strtol, strtoll): New macros, if UNSIGNED.
(strtoimax): Renamed from strtoumax. All uses of unsigned values
changed to signed values.
And make the following changes as well:
Fix copyright notice, as 1999 was missing.
(verify): New macro.
(strtoimax): Check sizes at compile-time, not run-time.
Prefer strtol to strtoll if both work.
(main): Remove; it was not that useful and was a pain to maintain.
Paul Eggert
Jim Meyering