Enhancements to run.sh.
Enhancements to run.sh.

If GALAXY_HOME is set add Galaxy code base and dependencies to the LWR's PYTHONPATH. This is required for many stock Galaxy tools.

Additionally, if TEST_GALAXY_LIBS is set, run.sh will attempt to verify Galaxy is properly placed on the LWR's PYTHONPATH before starting the server.

jmchilton/lwr,jmchilton/pulsar,galaxyproject/pulsar,galaxyproject/pulsar,ssorgatem/pulsar,ssorgatem/pulsar,natefoo/pulsar,natefoo/pulsar,jmchilton/pulsar,jmchilton/lwr