Merge branch 'misc' of https://github.com/sitsofe/fio

Pull misc packaging fixes from Sitsofe:

"Fixes to appease stricter packaging guidelines and some documentation
changes.  The big one is updating the COPYING file in fio to use the one
from https://www.gnu.org/licenses/old-licenses/gpl-2.0.txt . It's worth
double checking that it was a like-for-like replacement given the
significance of the file..."