devel/cctz: Update to 2.4

* Switch to CMake
* Backport upstream commit 64d12062183e2fa01f8c0127c4b9f91afaeee46c
* Import patches from Debian
* Build shared library instead of static
* Rework Makefile to follow Porters Handbook more closely

References:
https://github.com/google/cctz/commit/64d12062183e2fa01f8c0127c4b9f91afaeee46c

Sources:
https://salsa.debian.org/science-team/cctz/-/blob/master/debian/patches/0001-Compile-shared-lib-and-install-it.patch?ref_type=heads
https://salsa.debian.org/science-team/cctz/-/blob/master/debian/patches/use_system_zoneinfo.patch?ref_type=heads

PR:		261879
Approved by:	portmgr (maintainer timeout, 2+ years)

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.

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

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

Bump PORTREVISION for ports depending on the canonical version of GCC
defined via Mk/bsd.default-versions.mk which has moved from GCC 7.4 t
GCC 8.2 under most circumstances.

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, as a double check, everything INDEX-11 showed depending on lang/gcc7.

PR:		231590

devel/cctz: update to 2.2

PR:		231896
Submitted by:	John Hein <z7dr6ut7gs@snkmail.com> (maintainer)

A previous change unbroke this ports on powerpc64.

Approved by:	portmgr (tier-2 blanket)

Add DOCS options to ports that should have one.

Also various fixes related to said option.

PR:		230864
Submitted by:	mat
exp-runs by:	antoine

Bump PORTREVISION for ports depending on the canonical version of GCC
in the ports tree (via Mk/bsd.default-versions.mk and lang/gcc) which
has now moved from GCC 6 to GCC 7 by default.

This includes ports
 - featuring USE_GCC=yes or USE_GCC=any,
 - featuring USES=fortran,
 - using Mk/bsd.octave.mk which in turn features USES=fortran, and those
 - with USES=compiler specifying one of openmp, nestedfct, c11, c++0x,
   c++11-lib, c++11-lang, c++14-lang, c++17-lang, or gcc-c++11-lib.

PR:		222542

Update to 2.1

PR:		227975
Submitted by:	maintainer

Bump PORTREVISION for ports depending on the canonical version of GCC
(via Mk/bsd.default-versions.mk and lang/gcc) which has moved from
GCC 5.4 to GCC 6.4 under most circumstances.

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, c++11-lib, c++11-lang,
   c++14-lang, c++0x, c11, or gcc-c++11-lib.

PR:		219275

Mark some ports failing on power64.  In cases where the error message
was a stub, provide a real one.

While here, pet portlint.

Approved by:	portmgr (tier-2 blanket)
Reported by:	swills

Bump PORTREVISIONs for ports depending on the canonical version of GCC and
lang/gcc which have moved from GCC 4.9.4 to GCC 5.4 (at least under some
circumstances such as versions of FreeBSD or platforms).

This includes ports
 - with USE_GCC=yes or USE_GCC=any,
 - with USES=fortran,
 - using using Mk/bsd.octave.mk which in turn has USES=fortran, and
 - with USES=compiler specifying openmp, nestedfct, c++11-lib, c++14-lang,
   c++11-lang, c++0x, c11, or gcc-c++11-lib.

PR:		216707

- Add LICENSE_FILE
- Fix WWW:

Approved by:	portmgr blanket

CCTZ contains two libraries that cooperate with <chrono> to give
C++ programmers all the necessary tools for computing with dates,
times, and time zones in a simple and correct manner. The libraries
in CCTZ are:

_ The Civil-Time Library - This is a header-only library that
  supports computing with human-scale time, such as dates (which
  are represented by the cctz::civil_day class). This library is
  declared in civil_time.h.

_ The Time-Zone Library - This library uses the IANA time zone
  database that is installed on the system to convert between
  _absolute time_ and _civil time_. This library is declared in
  time_zone.h.

WWW: http://github.com/google/cctz

PR:		217599
Submitted by:	z7dr6ut7gs@snkmail.com