Added back mis-merged daemon shutdown in condor_config.
Revert "Added back mis-merged daemon shutdown in condor_config."

This reverts commit b59433e709762a7e53e0e110e7d32e9fdc51da55.
Revert 'Use DAEMON_SHUTDOWN to shutdown glidein daemons'
Fix bug - take properly into account proxy lifetime for calculating retirement time; also fix handling of minimum retire_time