[misc] miscellaneous cleanup

* move Spanish translation to its expected location
* set gitattributes for the loc file
* update license, factorize is_x64(), remove unwanted messages
[iso] update libcdio to latest

* Also remove MSG_176 from English version
* Also perform additional cleanup and remove a Clang warning
* Closes #224
[format] fix large FAT32 format for GPT drives

* Also set FSCTL_ALLOW_EXTENDED_DASD_IO before locking a drive
* Closes #181
[loc] add Korean translation

* Closes #206