Mk/Uses: always use colon for build/run suffix

Most USES use a colon for build/run(/test) suffixes. Change kde.mk,
qt.mk and pyqt.mk to do the same, and update all ports using that.

Document in CHANGES.

PR:			266034
Exp-run by:		antoine
Approved by:		tcberner (mentor)
Differential Revision:	https://reviews.freebsd.org/D36349

Remove WWW entries moved into port Makefiles

Commit b7f05445c00f has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.

This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.

Approved by:		portmgr (tcberner)

Add WWW entries to port Makefiles

It has been common practice to have one or more URLs at the end of the
ports' pkg-descr files, one per line and prefixed with "WWW:". These
URLs should point at a project website or other relevant resources.

Access to these URLs required processing of the pkg-descr files, and
they have often become stale over time. If more than one such URL was
present in a pkg-descr file, only the first one was tarnsfered into
the port INDEX, but for many ports only the last line did contain the
port specific URL to further information.

There have been several proposals to make a project URL available as
a macro in the ports' Makefiles, over time.

net-im: remove 'Created by' lines

A big Thank You to the original contributors of these ports:

  *  <ports@c0decafe.net>
  *  Adam Weinberger <adamw@FreeBSD.org>
  *  Alberto Villa <avilla@FreeBSD.org>
  *  Alexander Logvinov <ports@logvinov.com>
  *  Alexander Timoshenko <gonzo@univ.kiev.ua>
  *  Andrew Lewis <freeghb@gmail.com>
  *  Andrey Akhmichin <sepulkarium45@yahoo.com>
  *  Bartek Rutkowski <r@robakdesign.com>
  *  Bernard Spil <brnrd@freebsd.org>
  *  Brendan Molloy <brendan+freebsd@bbqsrc.net>
  *  Denis Shaposhnikov <dsh@vlink.ru>

Remove # $FreeBSD$ from Makefiles.

Bump PORTREVISION for ports depending on the canonical version of GCC
as defined in Mk/bsd.default-versions.mk which has moved from GCC 8.3
to GCC 9.1 under most circumstances now after revision 507371.

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, c11, c++0x, c++11-lang,
   c++11-lib, c++14-lang, c++17-lang, or gcc-c++11-lib
plus, everything INDEX-11 shows with a dependency on lang/gcc9 now.

PR:		238330

Fix Qt5 symbol version scripts to put the catch-all clause first.  When
a symbol matches multiple clauses the last one takes precedence.  If the
catch-all is last it captures everything.  In the case of Qt5 libraries
this caused all symbols to have a Qt_5 label while some should have
Qt_5_PRIVATE_API.  This only affects lld because GNU ld always gives the
catch-all lowest priority.

Older versions of Qt5Webengine exported some memory allocation symbols from
the bundled Chromium.  Version 5.9 stopped exporting these [1] but the
symbols were kept as weak wrappers for the standard allocation functions to
maintain binary compatibility. [2][3]  The problem is that the call to the
standard function in these weak wrappers is only resolved to the standard
function if there's a call to this standard function in other parts of
Qt5Webengine, because only then is there a non-weak symbol that takes
precedence over the weak one.  If there's no such non-weak symbol the call

This port requires USES=compiler:c++11-lang to build on GCC-based
architectures.

While here, pet portlint.

PR:		234723
Submitted by:	Piotr Kubaj
Approved by:	maintainer

Merge lang/qt5-qml and x11-toolkits/qt5-quick into x11-toolkits/qt5-declarative

- There was no obvious reason to split these ports, and it makes
  porting simpler; the set of ports using either mostly coincided.

Exp-run by:	antoine
PR:		223687
PR:		232751

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

Remove all USE_OPENSSL occurrences.

Sponsored by:	Absolight

Change c++11 behaviour of net-im/libqtelegram-ae and net-im/telegramqml.

Instead of explicitely disabling c++11 mode as the code uses narrowing of
unsigned ints to ints, simply pass -no-c++11-narrowing if the compiler is clang.
This is done in preparation for Qt 5.7.1, which requires c++11 mode.

Approved by:	rakuco (mentor)

Explicitly disable C++11 during the build.

Prepare for Qt 5.6, which will pass -std=gnu++11 by default when the compiler
supports it, and the build currently does not work:

../TelegramQML-0.9.2/telegramqml.cpp:4794:10: error: case value evaluates to
2573335900, which cannot be narrowed to type 'int' [-Wc++11-narrowing]
    case Update::typeUpdateReadHistoryInbox:

Note that Qt 5.7 will start requiring C++11 support, so this will need to be
fixed properly in the future.

PR:	        211916

Fix build with libc++ 3.8.0.

PR:		209967
Submitted by:	me
Approved by:	Henry Hu <henry.hu.sh at gmail.com> (maintainer)

Remove ${PORTSDIR}/ from dependencies, categories m, n, o, and p.

With hat:	portmgr
Sponsored by:	Absolight

Telegram API tools for QtQML and Qml, based on Cutegram-Core and libqtelegram.
It's free and released under the GPLv3 license.

WWW: https://github.com/Aseman-Land/TelegramQML

PR:		204349
Submitted by:	Henry Hu <henry.hu.sh@gmail.com>