workingctx.remove: use self.forget

commands: use repo.branchheads in heads command

commands: remove unused variable from heads command The b variable has not been needed since fd511e9eeea6. Renamed ls variable to bheads for clarity.

mq: print "'foo' 'bar'", not "['foo', 'bar']" when showing guards The internal list representation of guards was leaking into the output. The guards were always printed using repr(guard) and that style was kept. When "hg qguard -l" prints several guards for a patch, it does so by joining the names with " " and that style was used for the error messages too.

hg: remove underscores in clone function

hg-ssh: fix dispatch call to use dispatch.request() 08bfec2ef031 changed dispatch.dispatch() to accept a request object instead of a list of arguments

gendoc: config help topic is in hgrc.5, do not include it in hg.1