Change to allow egg launching from a URI.  Tested with
bin/nosetests ion/agents/instrument/test/test_driver_process.py
Also will work with ion/services/sa/test/test_driver_egg.py once that code is brought in from Ian.
removed trailing slash in repo base per swarbhanu.
Merge pull request #489 from unwin/master

launch driver process from egg working.

Smoke tests are passing on dev machines.
dial back loglevel for very verbose message
first draft of conditionally launching from egg
test for driver egg launch with skips for broken functionality
bump port_agent back to master
Temp fix for bad antlr download link on pypi
tests validating egg launch, one skipped due to lack of raised error
Merge pull request #490 from ifreecarve/2013-01-16_egg_launch

OOIION-584 tests validating egg launch, one skipped due to lack of raised error
Integrate PD doctor
Allow starting HAAgents with proc definition names

they will lookup ID
Support describe def by name in PD dashi handler
Map pyon exceptions in PD dashi handler
Set a default RestartMode in HAAgent
Add missing process state map
Fix process name generation

account for HAAgents that schedule by process definition name
instead of ID.
Bump epu pointer