The old gwvers.py script has been changed to getsr.py, which
lists the fields of the board status register in a more comprehensive
manner.

Then, the setsr.py script has been added as a means to clear set error
bits.

Note that unlike what the git commit output below states, the
gwvers.py was actually renamed (and changed to) getsr.py.
Signed-off-by: Theodor Stana <t.stana@cern.ch>