net-p2p/transmission-qt5

net-p2p/transmission* -- update and falvorize

* update to 2.94
* flavorize the Qt frontends
* give maintainership to lebarondemerde@privacychain.ch

PR:		226710
Approved by:	portmgr (mat), crees (previous maintainer)
Differential Revision:	https://reviews.freebsd.org/D14699

Replace bsd.qt.mk by Uses/qt.mk and Uses/qt-dist.mk

From now on, ports that depend on Qt4 will have to set
	USES=		qt:4
	USE_QT=		foo bar
ports depending on Qt5 will use
	USES=		qt:5
	USE_QT=		foo bar

PR:		229225
Exp-run by:	antoine
Reviewed by:	mat
Approved by:	portmgr (antoine)
Differential Revision:	→https://reviews.freebsd.org/D15540

net-p2p/transmission-cli: Update to 2.93

- Includes DNS rebinding fix
 - Fixes OpenSSL 1.1 compat

Note that the previous version was no longer vulnerable as FreeBSD had
patches, but this reports the correct version to trackers as some were
banned.

PR:		ports/225917
PR:		ports/225915

Bump PORTREVISION for ports depending on the canonical version of GCC (via Mk/bsd.default-versions.mk and lang/gcc) which has moved from GCC 5.4 to GCC 6.4 under most circumstances.

This includes ports
 - with USE_GCC=yes or USE_GCC=any,
 - with USES=fortran,
 - using Mk/bsd.octave.mk which in turn features USES=fortran, and
 - with USES=compiler specifying openmp, nestedfct, c++11-lib, c++11-lang,
   c++14-lang, c++0x, c11, or gcc-c++11-lib.

PR:		219275

Add -qt5 port.

While here, correct version of transmission meta-port

PR:		ports/220933
Submitted by:	ldbm@privacychain.ch