Merge pull request #30 from iansmith/fix_gobuild_deps

fixed the gobuilds so they can reference each other
Made --showdocker more verbose & useful.
Giving an error if artifacts are not properly defined
Merge pull request #32 from tcolar/verbosedocker

More verbose docker info in Pickett + artifacts check.
Add support for running nodes as part of the build process.

This should replace the "horrible hack" that we are currently
doing inside mesa build tarballs.

This code adds support for having the _result_ of a run be part of a
build.  See network_test.go for an example.

safety

safety