Rationale:
* Header cleanup: make the header of localedata files consistent
* Remove space (abmon): remove the extra prefix space in abmon 1~9
* Add (week): add the missing definition of week and first_weekday to 2
* Change (thousands_sep): change the thousands_sep from [,] to ['] to
avoid confusion of grouping 4 with usual grouping 3
* Simplify (yesexpr) and (noexpr): remove unusual full-width characters
* Add collation: add missing collation used in cmn_TW

Changelog:
* localedata/locales/cmn_TW: Header cleanup; Remove space (abmon); Add
(week); Change (thousands_sep); Simplify (yesexpr) and (noexpr).
* localedata/locales/hak_TW: Likewise and add collation.
* localedata/locales/nan_TW: Likewise and add collation.
* localedata/locales/lzh_TW: Likewise and add collation.