3 - build all archs of same package in one go
4 x strip all bundle support out
7 - deal with growing database: prune things.
8 - put build log into another table
9 - add table to mark which packages need xvfb-run; only use xvfb-run for those
10 (and only do those sequentially).
13 - split up dependency structure to support building under different distributions
14 - force'ing to a non-existent alias should fail.
15 - (rev315) the Rmpi, npRmpi and doMPI packages fail at the end of R CMD INSTALL because the test load of the package fails (outside of an MPI context)
16 so added a crude hack that when the debian/rules is written, 'extraInstallArgs="--no-test-load"' is added (as I do for Debian's Rmpi package)
17 conceivably we may want to generalise this one day as we do for lintian tests and patches and either look at at directory or a db table