disk_readp() edited in diskio.c, Test UNIT READY command added to test the connectivity with the USB flash drive.
Makefile renamed.
flash_drive.c edited to clean up functions flash_drive_init and flash_drive_deinit, the return values of the functions modified. In addition, unnecessary code removed. pff.c amended to add functionality for no_disk_found return in function pf_mount().
config.h added which has global macors like USB flash drive info, Debug on and off