Add command `git bisect state` that checks if the current bisection
process has reached the first bad commit.

This can be used for automated bisection without a check script.

Signed-off-by: Mattias Andrée <maandree@operamail.com>
CET is only one hour ahead of UTC, it even says so in date.c

Signed-off-by: Mattias Andrée <maandree@operamail.com>
Merge branch 'cet'
Merge branch 'master' of https://github.com/git/git