narrowcommands: add some missing strkwargs calls for py3
# skip-blame because it's just r prefixes
Differential Revision: https://phab.mercurial-scm.org/D2367
narrowwirepeer: add some strkwargs to fix a crash on py3
# skip-blame because it's just some r prefixes
Differential Revision: https://phab.mercurial-scm.org/D2366
narrowchangegroup: remove backwards compatibility with old hg
This was missed in the initial import of narrowhg, but was detected by
the Python 3 porting effort once I got enough other things in narrow
fixed.
Differential Revision: https://phab.mercurial-scm.org/D2370