sysutils/avfs: Revive and update version 0.9.9=>1.0.2

• Unbreak
• Pass maintainership to submitter
• Add LICENSE(LGPL20 GPLv2)
• Remove OPTIONS LIBRARY to make default as most of the dependent ports require the library
• Make proper use of OPTIONSNG to declutter ${PORT_OPTIONS:M*}

PR: 196942
Differential Revision: https://reviews.freebsd.org/D1795
Submitted by: mp39590@gmail.com
Approved by: marino(mentor)