Fixes #4 - Flexibility for the IDE to external change stuff.

* We bump to a hacked release of dbuild with less strict build rules
  and worse errors on misconfiguratoins.
* We add a globals section to each build with variables we pull from
  the environment, but also include defaults.
* We can most likely remove the sbt-on-2.10.2 build and just
  control that sucker via enviornment properties on the 2.10.x build
  if we really want to.

  Quick look-over from @dragos, pls.