merge: make 'diverging renames' diagnostic a more helpful note.
See the Hg Book on why we actually want to detect this case:
http://hgbook.red-bean.com/read/mercurial-in-daily-use.html#id364290
Before:
$ hg up
deadbeef
warning: detected divergent renames of X to:
...
After:
$ hg up
deadbeef
note: possible conflict - X was renamed multiple times to:
...
No functionality change.
gendoc: refactor get_cmd
Refactors the get_cmd to take the table as argument, instad
of just referencing the global table, thereby enabling reuse
for extension command tables.
subrepo: abort instead of pushing/pulling to the repo itself
_abssource will now abort (or return None) in the rare cases where no push/pull
path can be found.