[opensuse-buildservice] PATCH: add the flag --project to osc prjresults

Yo This patch adds the flag --project to osc prjresults, overriding other mechanisms of figuring out which project to look at. One thing it doesn't really cover is: osc prjresults --project=Editors:Emacs ~/builds/Editors:Vi That'll get the results from Editors:Emacs. However, since it's an arguably nonsensical command line, maybe do_prjresults should bail instead. But I think my patch is right as is anyway. Thoughts? The patch also includes a pair of trivial grammar fixes. :) Michael.