Add option '--host'
Accepts no value config like 'auto-rehash\n'.

Python 2.7 has allow_no_value option. But this script should work on
>= Python 2.5. So hack in dirty way.
insert a space after a comma
Merge branch 'addOption' of git://github.com/makiuchi-d/myprofiler
Fix handling 'port' option in cnf file.
Support /etc/my.cnf
Refactoring.
Add option to summarize capped samples.
Add tests.
Fix limit option wasn't passed.
Don't require my.cnf.
normalize: 'foo' => S / S, S, S, S, S => ...S
Show datetime on summary header.