[cdt-dev] Build console enhancement

[Matthias Spycher <matthias@xxxxxxxxxx>]

I have been playing with the CDT's build console, figuring out how one 
might extend it to create links when references to source code appear 
during compilation, e.g. in gcc error messages. When the user clicks on 
a link, an instance of IConsoleLinkHandler associated with the 
BuildConsolePartitioner is notified. The link handler is responsible for 
scanning lines for links while the document is partitioned and handling 
link activation, i.e. opening the corresponding file inside an editor.

See Bugzilla Bug 50124 for more info. I would appreciate a review and 
any comments.

Matthias