Bug#783122: tzdata: Wrong data for Europe/Minsk

[Paul Eggert <eggert@cs.ucla.edu>]

This problem should go away (or at least be different) once Ubuntu updates to tz 
2016g, which no longer uses "MSK" to abbreviate Minsk Time. 2016g uses "+03" 
instead, as part of the push to use numeric time zone abbreviations instead of 
inventing alphabetic ones.