Add support for BUG_PREFIX in codereview.settings

Add support for BUG_PREFIX in codereview.settings.

This change will allow projects other than chromium to specify 'BUG_PREFIX: project_name:' in their codereview.settings file.
Currently, the change is created with 'BUG=', entering a project's bug number there will point it to chromium's issue tracker. Adding a project specific prefix will make the links point to the project's issue tracker without the developer having to know about the magic prefix.

BUG=skia:1983
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=244801

[iannucci, 2014-01-14 19:37:33]

On 2014/01/14 18:57:11, rmistry wrote:

For consistency, could you also do this for gcl?

[rmistry, 2014-01-14 19:56:30]

On 2014/01/14 19:37:33, iannucci wrote:
> On 2014/01/14 18:57:11, rmistry wrote:
> 
> For consistency, could you also do this for gcl?

gcl does not automatically add the 'BUG=' line, which is why I left it out.
Would you like the BUG= line to be added to gcl? if yes then that should
probably be a different CL.

[iannucci, 2014-01-14 20:01:08]

On 2014/01/14 19:56:30, rmistry wrote:
> On 2014/01/14 19:37:33, iannucci wrote:
> > On 2014/01/14 18:57:11, rmistry wrote:
> > 
> > For consistency, could you also do this for gcl?
> 
> gcl does not automatically add the 'BUG=' line, which is why I left it out.
> Would you like the BUG= line to be added to gcl? if yes then that should
> probably be a different CL.

In other words, we already lack consistency. Go us :p.

lgtm

[commit-bot: I haz the power, 2014-01-14 21:03:12]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rmistry@google.com/132233006/1

[commit-bot: I haz the power, 2014-01-14 21:04:51]

Change committed as 244801