[PATCH] Fix first_weekday/first_workday for EU locales

[PATCH] Fix first_weekday/first_workday for EU locales

The following URL shows an official response to a question about
locale dates within the EU.  Basically they adopted ISO 8601:

http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:C:2004:78E:0447:0447:EN:PDF

ISO 8601:

http://dotat.at/tmp/ISO_8601-2004_E.pdf

2.2.8 calendar week
time interval of seven calendar days starting with a Monday

The pt_PT locale change has been removed from the patch by
Petr Baudis since Sunday seems to be the first day there
in daily usage.