Log Message:
Update to 5.8.1

Changes:
 * bugfix: invalid processing in QUEUE_FULL condition
 * new module mmsnmptrapd, a sample message modification module
 * bugfix: rate-limiting inside imuxsock did not work 100% correct
 * bugfix: $myhostname not available in RainerScript (and no error message)
 * bugfix: memory and file descriptor leak in stream processing
 * bugfix: doc for impstats had wrong config statements
 * bugfix: IPv6-address could not be specified in omrelp
 * bugfix: TCP connection invalidly aborted when messages needed to be
 * bugfix: $LocalHostName was not honored under all circumstances
 * bugfix(minor): improper template function call in syslogd.c

Full changelog message at http://www.rsyslog.com/changelog-for-5-8-1-v5-stable/