games/xray_re-tools: try harder to fix the port's build on -CURRENT

Commit 7cb3d96ec56d (n624509) was incomplete as it had only addressed
the writer part, not the reader.  While here, reduce the differences
between both counterparts and make the T::* pointer a private member.

Reported by:	pkg-fallout

games/xray_re-tools: unbreak the port's build against Clang 16

Both `std::const_mem_fun1_t' and `std::binary_function' template
classes had been deprecated in C++11 and removed in C++17, let's
get rid of them: the latter is just some typedefs and the former
holds a pointer to a member function and provides `operator()'.

Reported by:	pkg-fallout

games/xray_re-tools: try to unbreak the port in "build-as-user" mode

For some reason, extracted nVidia Texture Tools copy cannot be patched
in-place.  Instead, create dummy configuration file within the port's
own working directory.

Reported by:	pkg-fallout

games/xray_re-tools: unbreak the build against new nVidia Texture Tools

In 2020 Ignacio had modified the API with NVTT upstream commit adce1a00
which must have been cleanup, but was more than that.  Particularly, it
shuffled things around DirectDrawSurface class, and thus had broken the
port's build.  While here, remove all bundled 3rd-party code to prevent
accidental use thereof.

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.

games: remove 'Created by' lines

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

  *  <benlutz@datacomm.ch>
  *  <janos.mohacsi@bsd.hu>
  *  Aaron Baugher
  *  Aaron Dalton <aaron@FreeBSD.org>
  *  Aaron Dalton <aaron@daltons.ca>
  *  Aaron VonderHaar <avh4@usa.net>
  *  Aaron Zauner <az_mail@gmx.at>
  *  Adam Kranzel (adam@alameda.edu)
  *  Adam Weinberger <adamw@FreeBSD.org>
  *  Ade Lovett <ade@FreeBSD.org>
  *  Akinori MUSHA aka knu <knu@idaemons.org>

graphics/nvidia-texture-tools: update 2.0.8.1 → 2.1.1

- Mark games/xray_re-tools BROKEN with maintainer's consent

Remove # $FreeBSD$ from Makefiles.

When disabling pieces of code unsupported on FreeBSD, do it based on
the particular operating systems they are written for.

games/xray_re-tools: unbreak with clang 9

ld: error: utils/converter/level_mesh.o: unable to find library from dependent
library specifier: Opcode.lib
ld: error: utils/converter/opcode/Ice/IceAABB.o: unable to find library from
dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/Ice/IceContainer.o: unable to find library
from dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/Ice/IceHPoint.o: unable to find library from
dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/Ice/IceMatrix4x4.o: unable to find library
from dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/Ice/IcePoint.o: unable to find library from
dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/Ice/IceRandom.o: unable to find library from
dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/OPC_AABBTree.o: unable to find library from
dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/OPC_BaseModel.o: unable to find library from
dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/OPC_Collider.o: unable to find library from
dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/OPC_MeshInterface.o: unable to find library
from dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/OPC_Model.o: unable to find library from
dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/OPC_OptimizedTree.o: unable to find library
from dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/OPC_TreeBuilders.o: unable to find library
from dependent library specifier: Opcode.lib
ld: error: utils/converter/opcode/OPC_TreeCollider.o: unable to find library
from dependent library specifier: Opcode.lib

Reported by:	antoine (via bug 240629 exp-run)
Regressed by:	https://reviews.llvm.org/rL360984

- Mute service target after it was debugged and works as intended
- Amend the COMMENT line and port description, add missing articles
- Fix several (mostly harmless) bugs reported by PVS Studio

Portable (POSIX) subset of the X-Ray unofficial toolset used for modding the
S.T.A.L.K.E.R. game series by GSC Game World.  Currently includes standalone
converter utility which is useful for casual gamers to unpack game resources.

I've ported it back in 2012 but never committed for some reason.

WWW: https://github.com/abramcumner/xray_re-tools