fixed the missing facility in the syslog decode and added proper
defaults so that we use LOCAL4 as a default facility if none is found
* merged reconnection code for syslog from golang stdlib
* merged more compliant syslog format from golang stdlib
* merged in more of stdlib's syslog tests
* fixed a bug where syslog priority min and max values were not being enforced
* fixed a bad hostname fetch in connect()
* strengthened the check() in the syslog test
* merged in concurrent write test
* ported over the concurrent reconnect test from stdlib
Merge pull request #6 from mozilla-services/features/fix_syslog_facility

Features/fix syslog facility