* sets DOS locale using the same algorithm as MS' diskcopy.dll
* uses CONFIG.SYS menu to allow US vs non US selection
* only applies to WinME/MS-DOS for now (no FreeDOS)
* also renamed msdos.c -> dos.c with minor improvements
* also added missing FreeDOS credits in about dialog
* fixed issue #16 - crash during format on XP
* fixed issue #17 - non bootable drives when created in XP
* for more info on the problem and fix, see the issues above
* follow what MS/FormatEx actually allow
* closes#15
* also fixed potential empty selection in cluster size dropdown
* also improved Local Group Policy handling
* new drive notifications from explorer are annoying
* use Local Group Policy to temporarily disable them
* also fixed missing SetupDiDestroyDeviceInfoList call
* progress bar now reflects actual completion of process more closely
* dropped the use of UM_FORMAT_PROGRESS and introduced UpdateProgress() instead
* also reduced the number of rw test patterns from 4 to 2
* after a bb check, MBR could become garbage
* when that occurs, Windows might interpret a bad partition table and prevent MBR from being properly written
* force a complete zeroing of the whole MBR before partitioning to fix this
* also added error code for bb
Pete Batard