Install, build, and test specified pkgs in DrDr.

Initially just a test pkg, with a fixed source.

@jeapostrophe, please have a look.
This command line is ignoring the source. I think you want ("-n" name source). 

It seems like we want "--skip-installed" as well, in case the deps make them appear in a non-topologically sorted order.

 Also, you want "search-auto", not "auto", although I speculate that you put in the source stuff because you were worried about what got installed; if that's the case we could make this "fail" and then enforce the package list to be maintained (or generated) in topo-sort order.