net-im/farstream: merge a patch necessary for Lync calls, pet portlint

Merge https://gitlab.collabora.com/farstream/farstream/commit/11dde55cbaf5179e8e1885cf1483e538a8d5a4a9.patch to fix Lync calls with net-im/pidgin-sipe.

Add USES=localbase:ldflags.

Move some entries to fix portlint issues.

PR: 240348
Approved by: gnome (maintainer timeout), tcberner (mentor)
Differential Revision: https://reviews.freebsd.org/D21713