syslog: fixes and updates to rsyslogd and logrotate.
Adjust lograte size to prevent a mismatch.
Change rsyslogd size to be actual size instead of a naive value.
utils/syslog: updating comments for logrotate config
Merge pull request #775 from wwitzel3/ww3-rsyslogd-logrotate

syslog: fixes and updates to rsyslogd and logrotate.

Adjust lograte size to prevent a mismatch.
Change rsyslogd size to be actual size instead of a naive value.

Review: http://reviews.vapour.ws/r/42/