support python 2.6 compatibility
support changing syslog parameters in healthcheck.py
Keep user expectations the same for healthcheck.py

Disabling syslog by default in healthcheck.py would change behavior for
users upgrading from previous versions. This keeps syslog enabled by
default but adds an option to disable it.
Merge pull request #74 from crazed/syslog-fixes

Syslog fixes
fix bad EOR JSON encoding
Merge pull request #76 from thomas-mangin/master

fix issue #75