File names in Unicode

Fixed this bug.

Small fix

fix release file

Xml file output

More logic:
output file is compressed and XML formatted
if you do a rescan, the file is saved in memory and xml request included
whether to append the file.
If different file size then recalculating hash and replacing them
in xml

TTH hash calculator

Save settings to registry.
Fastest algorithm to calculate tth hash.
Calculate part was wrote on c language and got from rhash-1.1.8.