debugging travis only failure
try to prevent race condition in tests
additional race condition fixes in tests
Merge pull request #77 from osrf/fix_tests

debugging travis only failure
Return an error if requested capability is running

The start_capability service returns an error code if it
cannot start a capability because it is already running.
Merge pull request #79 from jonbinney/start-capability-response

Return an error if start_capability requested for a capability that is already running
Export architecture_independent flag in package.xml