* Disk Drive ID fixup for FAT32 was already available in ms-sys with option -p
* modified code to add FAT16 as well as FAT32 support as well as minor fixes
* reverts previous patch write_fat_32_br() and write_fat_16_br()
* 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
* 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