largefiles: make verify --lfa and --lfc work without --large The slightly obscure --lfa and --lfc only worked as modifiers to --large and could be combined. The documentation was however not clear what they did. Instead they now imply --large and the description is updated.

Greg Ward, author of the original bfiles extension
Na'Tosha Bard of Unity Technologies
Fog Creek Software
Special thanks to the University of Toronto and the UCOSP program