In preparation for syz-ci bisection:
- move bisection function into a separate interface
they look out of place in vcs.Repo because most OSes
don't implement it and most users don't case
- extract author name and more CC emails for commits
- move linux-specific PreviousReleaseTags into linux.go
- fix inconclusive bisection (more than 1 potential commits)
- add tests fr bisection
- add maintainers returned from get_maintainers.pl for commits
that don't have enough emails (e.g. only author email)
Update #501
This implements 2 features:
- syz-ci polls a set of additional repos to discover fixing commits sooner
(e.g. it can now discover a fixing commit in netfilter tree before
it reaches any of the tested trees).
- syz-ci uploads info about commits to dashboard.
For example, a user marks a bug as fixed by commit "foo: bar".
syz-ci will find this commit in the main namespace repo
and upload commmit hash/date/author to dashboard. This in turn
allows to show links to fixing commits.
Fixes#691Fixes#610
