Merge branch 'hn/bisect-reset-when-found' into jch

The 'git bisect' command has been taught a '--reset-when-found[=<where>]' option that tells the command to automatically run 'git bisect reset' to jump back to the original state or to the found culprit. * hn/bisect-reset-when-found: bisect: add --reset-when-found to leave when done bisect: let bisect_reset() optionally check out quietly