comms/rtl-sdr: Update to 2.0.1

and bump dependent ports' revisions

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.

comms: remove 'Created by' lines

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>

Remove # $FreeBSD$ from Makefiles.

Bump PORTREVISION for ports depending on the canonical version of GCC
as defined in Mk/bsd.default-versions.mk which has moved from GCC 8.3
to GCC 9.1 under most circumstances now after revision 507371.

This includes ports
 - with USE_GCC=yes or USE_GCC=any,
 - with USES=fortran,
 - using Mk/bsd.octave.mk which in turn features USES=fortran, and
 - with USES=compiler specifying openmp, nestedfct, c11, c++0x, c++11-lang,
   c++11-lib, c++14-lang, c++17-lang, or gcc-c++11-lib
plus, everything INDEX-11 shows with a dependency on lang/gcc9 now.

PR:		238330

comms/rtl-sdr: Switch to upstream versioning scheme and update to 0.6.0

Also:
- Switch to Github mirror
- Bump dependent ports' PORTREVISIONs

This port requires USES=compiler:c++11-lang to build on GCC-based
architectures.

PR:		234318
Submitted by:	Piotr Kubaj
Approved by:	portmgr (tier-2 blanket)

Most commonly used build systems support silent builds, when they
hide actual commands executed and only show short summary line (like
"CC foo.c"). CMake and ninja enable this by default, some autotools
using ports do as well. This is unacceptable because we need complete
build logs at any time, so we now switch to verbose build logs
unconditionally. Note that this change deliberately affects ALL
builds and not only package builds on cluster, because we need to
be sure that user experiencing failure can always provide informative
build log regardless of settings and without rerunning the build.

Change summary:

- Always do verbose builds for cmake, ninja and GNU configure (the
  latter includes check if --disable-silent-rules is actually supported
  by the configure script; there are isolated cases when it's not true)

Github cleanup.

- Use the version tag instead of commit hash when they're the same.
- Remove unnneeded variables.
- Simplify go- ports when possible.
- Various fixes.

Sponsored by:	Absolight

- Fix trailing whitespace in pkg-descrs, categories [a-f]*

Approved by:	portmgr blanket

Remove ${PORTSDIR}/ from dependencies, Mk and categories a, b, and c.

With hat:	portmgr
Sponsored by:	Absolight

As Jeff's baitisj@pcbsd.org keeps bouncing, replace with a working email

Approved by:	baitisj@pcbsd.org via email

A simple software defined radio (SDR) library.
Although being simple, libsdr is sufficient to write a simple SDR receiver
application (github.com/hmatuschek/sdr-rx, above). This RX application
supports several input sources (i.e. sound card, files, RTL2382 dongles etc.)
and modes (i.e. AM, FM, SSB, CW, etc.).

WWW: https://github.com/hmatuschek/libsdr

PR:		207379
Submitted by:	Jeffrey Baitis <baitisj@pcbsd.org>