Upgrade mosquitto to version 1.3.4
Fix use and options
Remove unnecessary dirs from plist

PR:		ports/194246
Submitted by:	joe@thrallingpenguin.com (maintainer)
Approved by:	mentors (implicit)


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@370963 35697150-7ecd-e111-bb59-0022644237b5