[OE-core] About auto-upgrade-helper's enhancement

[Robert Yang]

Hi Anibal and Paul,

I tried auto-upgrade-helper, it is very helpful when upgrade recipes.
I'd like to make some enhancements to make it can be easily used by the
maintainer (recipe upgrader) himself:
1) Don't send email when maintainer uses it, for example, when I want to
    upgrade "strace", I don't need it send email to anyone.
2) Use git's user.name and user.email in git commit when not send email,
    we need let the maintainer take responsible for it.
3) Do the commit on the recipes when the upgrade is succeed, currently,
    it keeps the commit when failed, but removed it when succeed.
4) Make upgradehelper.py can accept multiple recipes as args.
5) It's a small tool and helpful when upgrade recipes, can we move it into
    oe-core/scripts, please ?

-- 
Thanks

Robert