* lc_era.h: Redefine lc_era_t to keep
default date and time formats as well to workaround YA Windows
shortcoming. Refresh with latest data.
* lc_msg.h: Refresh with latest data.
* nlsfuncs.cc (__eval_datetimefmt): Revert latest change.
(__set_lc_time_from_win): Rename res to era. Prefer default date and
time formats from era array if available.
(__set_lc_messages_from_win): Rename res to msg.