f3fix: improve error handling
f3fix: add proper support to parameters
f3probe: rename block device to disk device

f3probe really cares about disk devices.
f3probe: report if the device changes its filename

Due to the resets, the device might move its filename.
For example, from `/dev/sdb' to `/dev/sdc'.
f3probe: suggest f3fix when the drive is fake
Add f3fix to this release
f3fix: report success to user
Update folder where drives are mounted in README

At least Ubuntu has added the username after /media/.
f3probe: avoid hanging before the second reset

f3probe was writing too many blocks between
the first and the second reset due to
a poor estimate of the writing and reseting times.