[SM-I18N] 3 letter textual month not i18n'ized

[Frode N. <fr...@no...>]

Hello, 

The 'M' date_format flag is not i18n'ized.  'F' is. 

Added a str_replace similar to 'F' to date_intl(). 

See attached patch. 


Mvh, 

Frode Nordahl