wcstol(3) family get 400% slower than before Issue #64 fixes.

[Takehiko NOZAKI]

Issue #64, i merged strtou?l/wcstou?l implementation by strtol_template.h. but this change spoil performance of wcs* function.

strtol_template.h using isw?digit/isw?alpha/tow?upper to convert from digit character to int. but it is too expensive(single-byte version has inline macro, but widechar version hasn't).

old implementation uses __wctoint() function that using switch-case table and good performance. so i'll use it.

[Takehiko NOZAKI]

BUGFIX: Issue #65 -- wcstol(3) family get 400% slower than before Issue #64 fixes.

→ <<cset 92477ea20847>>