finance/py-backtrader1.9.74.123_2

python: bump all USE_PYTHON=distutils consumers after RUN_DEPENDS removal

Any missed ports, feel free to bump.

Any ports that need setuptools at runtime can have the devel/py-setuptools
manually added back to RUN_DEPENDS, but understand that this practice
is deprecated; see CHANGES for details.

all: remove explicit versions in USES=python for "3.x+"

The logic in USES=python will automatically convert this to 3.8+ by
itself.

Adjust two ports that only had Python 3.7 mentioned but build fine
on Python 3.8 too.

finance/quickfix: mark BROKEN with PYTHON

libtool: compile:  c++ -DHAVE_CONFIG_H -I. -I../.. -I -I. -I.. -I../.. -I../C++ -DLIBICONV_PLUG -DPYTHON_MAJOR_VERSION=3 -Wno-unused-variable -Wno-maybe-uninitialized -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing -DLIBICONV_PLUG -Wall -ansi -Wno-unused-command-line-argument -Wpointer-arith -Wwrite-strings -Wno-overloaded-virtual -Wno-deprecated-declarations -Wno-deprecated -std=c++0x -MT _quickfix_la-QuickfixPython.lo -MD -MP -MF .deps/_quickfix_la-QuickfixPython.Tpo -c QuickfixPython.cpp  -fPIC -DPIC -o .libs/_quickfix_la-QuickfixPython.o
warning: unknown warning option '-Wno-maybe-uninitialized'; did you mean '-Wno-uninitialized'? [-Wunknown-warning-option]
QuickfixPython.cpp:175:11: fatal error: 'Python.h' file not found
          ^~~~~~~~~~
1 warning and 1 error generated.

Reviewed by:	portmgr, vishwin, yuri
Differential Revision:	<https://reviews.freebsd.org/D40568>

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.

This commit implements such a proposal and moves one of the WWW: entries
of each pkg-descr file into the respective port's Makefile. A heuristic
attempts to identify the most relevant URL in case there is more than
one WWW: entry in some pkg-descr file. URLs that are not moved into the
Makefile are prefixed with "See also:" instead of "WWW:" in the pkg-descr
files in order to preserve them.

There are 1256 ports that had no WWW: entries in pkg-descr files. These
ports will not be touched in this commit.

The portlint port has been adjusted to expect a WWW entry in each port
Makefile, and to flag any remaining "WWW:" lines in pkg-descr files as
deprecated.

Approved by:		portmgr (tcberner)

finance: remove 'Created by' lines

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

  *  Alexey Dokuchaev <danfe@FreeBSD.org>
  *  Anton Berezin <tobez@FreeBSD.org>
  *  Christopher Boumenot <boumenot@gmail.com>
  *  David Naylor <naylor.b.david@gmail.com>
  *  Dermot Tynan <dtynan@kalopa.com>
  *  Dorit Rottner (<rottner@punkt.de>)
  *  Emanuel Haupt <ehaupt@FreeBSD.org>
  *  Eric Freeman <freebsdports@chillibear.com>
  *  Glenn Johnson <glennpj@charter.net>
  *  James FitzGibbon <jfitz@FreeBSD.org>
  *  Janky Jay <ek@purplehat.org>
  *  Mario Sergio Fujikawa Ferreira <lioux@FreeBSD.org>
  *  Maxim Sobolev <sobomax@FreeBSD.org>
  *  Michael Johnson <ahze@FreeBSD.org>
  *  Michael Reifenberger <mr@freebsd.org>
  *  Mikhail T. <m.tsatsenko@gmail.com>
  *  Mikhail Teterin
  *  Neil Booth
  *  Po-Chuan Hsieh <sunpoet@FreeBSD.org>
  *  Qian Jin <eric.siroh@gmail.com>
  *  Ryan Steinmetz <zi@FreeBSD.org>
  *  Seamus Venasse <svenasse@polaris.ca>
  *  Sergey Skvortsov <skv@protey.ru>
  *  Steven Kreuzer <skreuzer@FreeBSD.org>
  *  TAKAHASHI Kaoru <kaoru@kaisei.org>
  *  TAKATSU Tomonari <tota@FreeBSD.org>
  *  Thierry Thomas <thierry@pompo.net>
  *  Thomas Gellekum <tg@FreeBSD.org>
  *  Trevor Caira <trevor@bitba.se>
  *  Vick Khera <vivek@khera.org>
  *  Vivek Khera <vivek@khera.org>
  *  Wen Heping <wen@FreeBSD.org>
  *  Wen heping <wenheping@gmail.com>
  *  Yen-Ming Lee <leeym@FreeBSD.org>
  *  Yuri Victorovich <yuri@rawbw.com>
  *  Zach Thompson <hideo@lastamericanempire.com>
  *  anarcat@anarcat.ath.cx
  *  chinsan
  *  courou <courou@users.sourceforge.net>
  *  ijliao
  *  lth@FreeBSD.org
  *  wcarey
  *  will

With hat:	portmgr

math/py-matplotlib: chase minimum Python version in dependent ports

Since the previous update changed USES=python from 3.6+ to 3.7+, all
dependent ports must have USES=python:3.7+ as well, otherwise it breaks
the @py36 flavor.

PR:		255347
Reported by:	sunpoet

Remove # $FreeBSD$ from Makefiles.

Drop python 2.7 support from a few ports

With hat:	portmgr

finance/py-backtrader: add ta-lib support

PR:		238972
Submitted by:	m.tsatsenko@gmail.com (maintainer)

[NEW PORT] finance/py-backtrader: Python Backtesting library for trading strategies

A feature-rich Python framework for backtesting and trading.

backtrader allows you to focus on writing reusable trading strategies,
indicators and analyzers instead of having to spend time building
infrastructure.

WWW: https://www.backtrader.com/
WWW: https://github.com/backtrader/backtrader

PR:		238572
Submitted by:	<m.tsatsenko gmail com>