D1431: sshpeer: add a configurable hint for the ssh error message

[durin42 (Augie Fackler)]

durin42 requested changes to this revision.
durin42 added a comment.
This revision now requires changes to proceed.


  D'oh: this also needs to be documented, probably in `hg help config`. That's from `mercurial/help/config.txt` - hopefully it'll be fairly straightforward to add?

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D1431

To: zuza, #hg-reviewers, durham, mitrandir, durin42
Cc: yuja, mercurial-devel