* move Spanish translation to its expected location
* set gitattributes for the loc file
* update license, factorize is_x64(), remove unwanted messages
* closes#22 (missing CloseHandle for FreeDOS' AUTOEXEC.BAT)
* split rufus and rufus_fd solution files (VS2010)
* error messages small improvements
* since we're on Windows, use .txt extension for README and TODO