Noissue - Create a wrapper around upload.py with a more convenient command line interface

This review has been created by running hg review command. Differences to upload.py:
1) Mercurial`s global command line parameters -q/-v/--debug are supported.
2) Consistent revision parameters: -r/-c like with hg diff (short form of --reviewers had to be changed into -w).
3) Adds @adblockplus.org to email addresses automatically if missing.
4) Mails sent automatically (always when a new review is created and only if -m present for updates).
5) Title set automatically for new reviews if -c is specified.
6) Setting reviewers mandatory for new reviews, also revision/revision range always has to be specified explicitly.

[Sebastian Noack, 2016-03-10 12:31:05]

https://codereview.adblockplus.org/29338061/diff/29338062/hgreview.py
File hgreview.py (right):

https://codereview.adblockplus.org/29338061/diff/29338062/hgreview.py#newcode12
hgreview.py:12: @command('review',
Note that cmdutil isn't a standard library. IMO the boilerplate when using
argsparse from the core library is negligible. But I wouldn't insist for a tool
like that.

https://codereview.adblockplus.org/29338061/diff/29338062/hgreview.py#newcode70
hgreview.py:70: args += paths
Nit: Why not modifying args inline as above using args.extend()?

[Wladimir Palant, 2016-03-10 12:36:37]

https://codereview.adblockplus.org/29338061/diff/29338062/hgreview.py
File hgreview.py (right):

https://codereview.adblockplus.org/29338061/diff/29338062/hgreview.py#newcode12
hgreview.py:12: @command('review',
On 2016/03/10 12:31:05, Sebastian Noack wrote:
> Note that cmdutil isn't a standard library.

No, it isn't a standard library but it is documented Mercurial API and
recommended for Mercurial extensions. I think that by reimplementing we would
create a larger risk of incompatibilities than by sticking with it.

https://codereview.adblockplus.org/29338061/diff/29338062/hgreview.py#newcode70
hgreview.py:70: args += paths
On 2016/03/10 12:31:05, Sebastian Noack wrote:
> Nit: Why not modifying args inline as above using args.extend()?

Done.

[Sebastian Noack, 2016-03-10 12:44:28]

LGTM

https://codereview.adblockplus.org/29338061/diff/29338062/hgreview.py
File hgreview.py (right):

https://codereview.adblockplus.org/29338061/diff/29338062/hgreview.py#newcode12
hgreview.py:12: @command('review',
On 2016/03/10 12:36:36, Wladimir Palant wrote:
> On 2016/03/10 12:31:05, Sebastian Noack wrote:
> > Note that cmdutil isn't a standard library.
> 
> No, it isn't a standard library but it is documented Mercurial API and
> recommended for Mercurial extensions. I think that by reimplementing we would
> create a larger risk of incompatibilities than by sticking with it.

I just realized that this is a Mercurial extension, and that this module comes
from Mercurial's API. So it actually makes sense to use it here.