[Translators] Update for SK translation of VLC 1.2.0

[Marián Hikaník]

Hello,
I prepared an update for Slovak translation of VLC 1.2.0. Source file was downloaded from 
http://git.videolan.org/?p=vlc.git;a=tree;f=po;hb=HEAD  and updated with latest .pot file from this directory. All the new/edited strings 
were then translated into Slovak language (total: 5886 strings).

You can download the latest sk.po file from: www.mojepreklady.net/download/Update-for-SK-translation-120.zip. Please merge this translation 
and upload the new file on your server. Thank you in advance. Best regards,

--
Marián Hikaník