[release] Messenger 6.1 Official

According to Bink.nu and Winbeta.org it has been officially released.

Get it (and mod it) while it's hot... (Y) in several languages too!

Ad Remover + "Polygamy" patch (allows multiple instances of Messenger)

(I haven't tested it but for those brave ones, here you have it... got it off Neowin)