www/py-cherrypy: Fix runtime with Python 3.8 and onward

Backport patches from the 18.x release branch that uses the Python's
library "contextlib" instead of the external library "contextlib2".

The "contextlib2" library is a backported version which is required for
compatibility with Python 2.7 as the 17.x release of CherryPy is the
last one that has compatibility for Python 2.7.

Since the support for Python 2.7 has been removed in aa7a6c429ea6,
"contextlib2 is no longer needed for backward compatibility.

This is a transitional solution to fix the regression with Python 3.8
because an update to the 18.x release needs a bit more work and also
requires one or more new Python packages.

Remove # $FreeBSD$ from Makefiles.

Remove logic for Python < 3.6 for ports using Python 3.6+

Drop python 2.7 support from a few ports

With hat:	portmgr

Update to 17.4.2

The upcoming update of news/sabnzbd to 3.0.0 needs an updated cherrypy.

This is not the newest release of cherrypy as that has dependencies that
aren't in ports yet, but this gets us from a 2016 release to a 2019 release

PR:		247597
Submitted by:	James French <james@french.id.au>
Approved by:	maintainer timeout

www/py-cherrypy: rename patch to better match intent

www/py-cherrypy: unbreak with DEFAULT_VERSIONS += python=3.8

>>> import cherrypy
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.8/site-packages/cherrypy/__init__.py", line 67,
in <module>
    from cherrypy._cperror import HTTPError, HTTPRedirect, InternalRedirect
  File "/usr/local/lib/python3.8/site-packages/cherrypy/_cperror.py", line 118,
in <module>
    from cgi import escape as _escape
ImportError: cannot import name 'escape' from 'cgi'
(/usr/local/lib/python3.8/cgi.py)

Obtained from:	upstream

Bump a few PORTREVISIONs after r498529

With hat:	portmgr

Use PY_FLAVOR for dependencies.

FLAVOR is the current port's flavor, it should not be used outside of
this scope.

Sponsored by:	Absolight

www/py-cherrypy: Added USE_PYTHON=concurrent

It is obviously needed because py27 and py36 currently
conflict with each other.

Approved by:	tcberner (mentor, implicit)

Convert Python ports to FLAVORS.

  Ports using USE_PYTHON=distutils are now flavored.  They will
  automatically get flavors (py27, py34, py35, py36) depending on what
  versions they support.

  There is also a USE_PYTHON=flavors for ports that do not use distutils
  but need FLAVORS to be set.  A USE_PYTHON=noflavors can be set if
  using distutils but flavors are not wanted.

  A new USE_PYTHON=optsuffix that will add PYTHON_PKGNAMESUFFIX has been
  added to cope with Python ports that did not have the Python
  PKGNAMEPREFIX but are flavored.

  USES=python now also exports a PY_FLAVOR variable that contains the

- Fix shebang

Update to 5.4.0

PR:	209986
Submitted by:	myself
Approved by:	maintainer timeout (nivit, 20 days)

Remove ${PORTSDIR}/ from dependencies, categories v, w, x, y, and z.

With hat:	portmgr
Sponsored by:	Absolight

Switch PYTHON_REL from a 3 digits number to a 4 digits number to handle
python 2.7.10

Differential Revision:	https://reviews.freebsd.org/D2639
Reviewed by:	sunpoet, mva

- Convert USE_PYTHON to new USES in www/

With hat:	python@

- Update to 3.2.6

- Update to 3.2.4  [1]
- Use CHEESESHOP as only download site  [1]
- Remove leading article from COMMENT
- Add LICENSE (BSD3CLAUSE)
- Deprecate easy_install
- Use automatic pkg-plist via PYDISTUTILS_AUTOPLIST
- Convert to the new options framework
- Make EXAMPLES option effective only for Python ver. < 3,
  due to devel/py-cheetah at the moment only for Python 2
- Add support for stage-dir
- Add a post-[extract|patch] target to fix setup.py,
  otherwise *_AUTOPLIST fails
- Fix format of WWW field in pkg-descr, and remove Author:

PR:	ports/186286  [1]
Submitted by:	Martin Tournoij <martin@arp242.net>

Fix properties on pkg-plist

Add NO_STAGE all over the place in preparation for the staging support (cat:
www)

- Update to 3.2.2

- Update to 3.2.0
- Install test/native-server.ini, and test/fastcgi.conf
  only if Python version < 3
- Set USE_PYTHON to "yes"
- Use devel/py-setuptools to install the module

- Move over to py25
- while here drop md5 support
- Small cleanups

- Update to 3.1.2

- Update to 3.1.1
- Add devel/py-cheetah to RUN_DEPENDS when NOPORTEXAMPLES is not defined
- Remove files/patch-setup.py

PR:             ports/128843
Submitted by:   Wen Heping < wenheping at gmail dot com >

- Update to 3.0.3
- Add a secondary download site

- Update to 3.0.2

 - Make Python 2.5.1 the default Python version
 - Add significantly better support in bsd.python.mk for working with
   Python Eggs and the easy_install system

Tested by:      pointyhat runs
Approved by:    pav (portmgr)
Most work by:   perky
Thanks to:      pav

- Update to 3.0.1

PR:             ports/113722
Submitted by:   Peter Johnson <johnson.peter@gmail.com>
Approved by:    maintainer timeout (nivit; 1 month)

- Updated email address in my ports

Approved by:    alexbl (mentor)

Update 2.2.1

PR:             96334
Submitted by:   Nicola Vitale <nivit@email.it> (maintainer)

- Update to 2.2.0
- Hide examples behind WITH_EXAMPLES

PR:             ports/95366
Submitted by:   Nicola Vitale <nivit@email.it> (maintainer)

- Update to 2.2.0.b

PR:             92448
Submitted by:   nivit@email.it (maintainer)

CherryPy is a pythonic, object-oriented web development framework.

CherryPy allows developers to build web applications in much the same
way they would build any other object-oriented Python program.
This usually results in smaller source code developed in less time.

PR:             ports/91686
Submitted by:   Nicola Vitale <nivit@email.it>