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)

- Remove unneeded pkg-install/pkg-deinstall scripts, and properly
  use pkg-message to display uninstall message [1]
- Reorder some statements to silence some portlint warnings
- Properly use shebangfix on more files, replacing some REINPLACE_CMDs
- Remove unneeded REINPLACE_CMDs
- Use RLN in place of LN, to correctly create relative symlinks

Reported by:	bapt [1]

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

  *  'Big Bad Bob' Frazier <bobf@mrp3.com>
  *  <mr@freebsd.org>
  *  Alex Samorukov <samm@freebsd.org>
  *  Alexander Logvinov <ports@logvinov.com>
  *  Alexey Dokuchaev <danfe@FreeBSD.org>
  *  Anders Nordby <anders@FreeBSD.org>
  *  Andreas Klemm <andreas@klemm.gtn.com>
  *  Andrew Dolgov <fox@furry.spb.ru>
  *  Andrey Lykhin <lan31@inbox.ru>
  *  Anton Voronin <anton@urc.ac.ru>
  *  Brandon S. Allbery KF8NH <allbery@ece.cmu.edu>
  *  Brian Dean <bsd@FreeBSD.org>
  *  Bruce Cran <bruce@cran.org.uk>
  *  Carl Makin <carl@stagecraft.cx>
  *  Darren <igla@batterybackups.net>
  *  David
  *  David O'Brien <obrien@cs.ucdavis.edu>
  *  David Thiel <lx@redundancy.redundancy.org>
  *  Denis Shaposhnikov <dsh@vlink.ru>
  *  Devon H. O'Dell <devon.odell@coyotepoint.com>
  *  Diane Bruce <db@db.net>
  *  Douglas K. Rand <rand@meridian-enviro.com>
  *  Edward Tomasz Napierala <trasz@FreeBSD.org>
  *  Emanuel Haupt <ehaupt@FreeBSD.org>
  *  Felix Palmen <felix@palmen-it.de>
  *  Frank Steinborn <steinex@nognu.de>
  *  Ganael Laplanche <ganael.laplanche@martymac.org>
  *  George Reid <greid@ukug.uk.freebsd.org>
  *  Hye-Shik Chang <perky@fallin.lv>
  *  Janos.Mohacsi@bsd.hu
  *  Jean-Baptiste Quenot <jb.quenot@caraldi.com>
  *  Jeffrey Baitis <jeff@baitis.net>
  *  Johan Strom <johan@stromnet.se>
  *  Johan Strom <johna@stromnet.se>
  *  Jui-Nan Lin <jnlin@freebsd.cs.nctu.edu.tw>
  *  Julian Stacey <jhs@FreeBSD.org>
  *  Kirill Bezzubets <kirill@solaris.ru>
  *  MITA Yoshio <mita@FreeBSD.org>
  *  Markus Brueffer <markus@FreeBSD.org>
  *  Martin Matuska <mm@FreeBSD.org>
  *  Martin Wilke <miwi@FreeBSD.org>
  *  Masafumi NAKANE <max@FreeBSD.org>
  *  Matt Dawson <matt@mattsnetwork.co.uk>
  *  Maxim Sobolev <sobomax@FreeBSD.org>
  *  Michael Reifenberger (mike@Reifenberger.com)
  *  Mike Heffner <mikeh@FreeBSD.org>
  *  Nick Sayer <nsayer@FreeBSD.org>
  *  Nicole Reid <root@cooltrainer.org>
  *  Olivier Cochard-Labbe <olivier@FreeBSD.org>
  *  Patrick Gardella <patrick@FreeBSD.org>
  *  Paul Traina <pst@FreeBSD.org>
  *  Pav Lucistnik <pav@FreeBSD.org>
  *  Rick Elrod <codeblock@eighthbit.net>
  *  Rodrigo Osorio <rodrigo@FreeBSD.org>
  *  Sebastian Yepes <esn@x123.info>
  *  Staffan Ulfberg <staffanu@multivac.fatburen.org>
  *  Stephen Hurd <shurd@FreeBSD.org>
  *  Steve Woodford <scw@netbsd.hut.fi>
  *  Steven Kreuzer <skreuzer@FreeBSD.org>
  *  Sunry Chen <sunrychen@gmail.com>
  *  Søren Straarup <xride@x12.dk>
  *  Tony Shadwick <tshadwick@oss-solutions.com>
  *  Tsung-Han Yeh <snowfly@yuntech.edu.tw>
  *  Vladimir Grebenschikov
  *  Vladimir Kondratyev <wulf@FreeBSD.org>
  *  db
  *  dirkx@webweaving.org
  *  dom@happygiraffe.net
  *  elbarto@ArcadeBSD.org
  *  hm
  *  jmz
  *  joes@seaport.net
  *  lambert@lambertfam.org
  *  nox@FreeBSD.org
  *  obrien@cs.ucdavis.edu
  *  rkw
  *  shurd
  *  shurd@FreeBSD.org
  *  wlloyd@slap.net
  * //www.tomek.cedro.info)

With hat:	portmgr

Update the CONFLICTS definitions of ports in the following categories:

- accessibility
- archivers
- audio
- benchmarks
- biology
- cad
- chinese
- comms
- converters

An attempt has been made to use generic conflicts patterns that do not
have to be updated whenever a new version of a conflicting port is
added to the ports system.

There is a misunderstanding that the port being built/installed has to
be omitted from the conflicts pattern. This is not true - the port
being built is implicitly non-conflicting due to logic in bsd.port.mk.

Approved by:	portmgr (implicit)

The conflict checks compare the patterns first against the package
names without version (as reported by "pkg query "%n"), then - if
there was no match - agsinst the full package names including the
version (as reported by "pkg query "%n-%v").

Many CONFLICTS definitions used patterns like "bash-[0-9]*" to filter
for the bash package in any version. But that pattern is functionally
identical with just "bash".

Approved by:	portmgr (blanket)

- Convert to USES=localbase

- Don't clobber LDFLAGS