net/libcharon: Upgrade for cura 5.7

- upgrade need for cura
- N.B. -DPython_VERSION:STRING=${PYTHON_VER} \ Why lower case??

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.

ports/cura: Update to 4.13.1

Major update to 4.13.1 not 4.12
I've said it before and I'll say it again. This port should be a
group effort but a cads porting team. I'd be happy to give
up Maintainership as my only interest with cura was to get it into
ports.

PR:		ports/255630
Reported by:	unrelentingtech <greg@unrelenting.technology>
Tested by:	trombik1973@gmail.com

One more small cleanup, forgotten yesterday.
Reported by:	lwhsu

Remove # $FreeBSD$ from Makefiles.

Really update libcharon to 4.8

N.B. the wrinkle in cmake build here.
find_package(Pythoninterp 3.4 REQUIRED) can find your install Python 3.9
instead of the DEFAULT Python. Force the correct one with a few patches.

PR:		ports/251236
Submitted by:	sko@rostwald.de
Reported by:	trombik1973@gmail.com

This patch updates Cura and all associated dependencies to 4.7.1.

Also, it adds math/py-numpy-stl - an optional dependency that makes
loading STL files much faster. Without it, Cura was complaining:

2020-09-20 02:19:31,877 - WARNING - [MainThread] STLReader.STLReader.<module>
[32]: Could not find numpy-stl, falling back to slower code.

I'm not sure where the 6.x version in cad/fdm_materials came from, seems
like now that project has its version in sync with the Cura version,
so I chose to increment PORTEPOCH for that. [Greg]

- fdm_materials adds some new materials usable with Cura
- I had to bump PORTEPOCH on a couple of ports
- py-numpy-stl was added on a separate commit
- Bump version checking in Cura on some dependancies
[db]

PR:		ports/249468
Submitted by:	greg@unrelenting.technology

Clean up some duplicated variables

Reported by:	portscan

Forgot to add NO_ARCH=yes no binary change

File metadata and streaming library

As of march 5th the Charon library is the responsibility of the Embedded
Applications team. Pull requests to MASTER have to be verified by the Embedded
Applications team.

WWW: https://github.com/Ultimaker/libCharon