Refactored to receive merge from SDP.
This structure emphasizes that HMS will be layered on the SDP. The tree is
now structured to make it clear where files appear in an as-deployed
configurtion, overlaid into the '/p4/common' structure of the SDP.
The test suite is outside this structure, as it will not be deployed (due
to dependencies on infratructure that won't likely appear in SDP production