BugLink parsing

[Daniel Chen]

On Fri, May 1, 2009 at 12:25 PM, Brad Figg <brad.figg at canonical.com> wrote:
>   2. If there is a "BugLink:" line and no "Bug: #" the "LP: #" is extracted
>      from the URL if it is a "bugs.launchpad.net" url.

The following may be a corner case, but hopefully it will handle
bugs(.)*.launchpad.net in the case where I mistakenly use
bugs.edge.launchpad.net or bugs.staging.launchpad.net.