Add another test for coaster heartbeat bug

git-svn-id: https://svn.mcs.anl.gov/repos/exm/sfw/turbine/trunk@13806 dc4e9af1-7f46-4ead-bba6-71afc04862de
Fix memory leak

git-svn-id: https://svn.mcs.anl.gov/repos/exm/sfw/turbine/trunk@13810 dc4e9af1-7f46-4ead-bba6-71afc04862de
Separate logging for executor functionality

git-svn-id: https://svn.mcs.anl.gov/repos/exm/sfw/turbine/trunk@13812 dc4e9af1-7f46-4ead-bba6-71afc04862de