Add a check target.

Just developer convenience - I'm used to autotools 'make check'
environments.

Change-Id: Idf5bb882f798d22d4513756b5273d4ae19caa5c0
Fix Merge::Map for scatter-gather in Configs.

When Merge::Map was used like so:

NovaCompute0Config:
  Merge::Map:
    NovaCompute0:
      Fn:....

We were adjusting the inner NovaCompute0 to the current scaling loop
position rather than exploding it out as part of the map. For now, we
want maps to be global in context so the fix is fortunately simple.

Change-Id: Ibea723d4c763f593d934a9d2acfd31ce369f6408
Merge "Add a check target."
Merge "Fix Merge::Map for scatter-gather in Configs."