rhg: look for repository in ancestors also instead of cwd only...
rhg: look for repository in ancestors also instead of cwd only
Last patch introduced config reading at startup to parse value of `--repository`
flag. However, that patch only tried to check for current repository at current
working directory and not it's ancestors. This patch fixes that.
Differential Revision:
https://phab.mercurial-scm.org/D10767