help: update help text for debug-repair-
issue6528
The changegroup fix was put in 5.9.1, this is now out of date. Alson, this can
maybe encourage people to upgrade?
Differential Revision: https://phab.mercurial-scm.org/D11392
dispatch: use detailed exit code 250 for keyboard interrupt
Among our users at Google, we're still seeing several percent of
commands fail with exit code 255. I suspect keyboard interrupts is an
important remaining reason.
This is a resend of D10086 with some fixes for pager handling added
ahead of it.
Differential Revision: https://phab.mercurial-scm.org/D11628