Fixing Windows mouse issues, Vista 64 bits note

I have just fixed two issues related to Windows + the new mouse input. First, cursors under Windows rather be 32x32 or displayed corrupted - googled it up after a series of experimentation in Gimp with no success. Now all cursors resized to 32x32, to let it work as fine as under Linux. Second, main menu mouse input didnt work under Windows - solving it was to prepare the code for Windows specific file path separator. All committed into SVN repo.

MysticSkript visited us on IRC chat and told about a problem related to running latest release under Vista64bit. I figured out just today that the solution right now is to use x86 (32-bit) Java installation if you want to run the previous release. (SVN version should work with 64 bit Java and Vista64 tho' I haven't tested it yet.)