Remove PHP 7.2 which expired today, use PHP 7.4 instead.

2020-12-31 ./net/php72-soap: Security Support ends on 30 Nov 2020
2020-12-31 ./net/php72-sockets: Security Support ends on 30 Nov 2020
2020-12-31 ./net/php72-xmlrpc: Security Support ends on 30 Nov 2020
2020-12-31 ./net/php72-ldap: Security Support ends on 30 Nov 2020
2020-12-31 ./textproc/php72-xmlwriter: Security Support ends on 30 Nov 2020
2020-12-31 ./textproc/php72-pspell: Security Support ends on 30 Nov 2020
2020-12-31 ./textproc/php72-enchant: Security Support ends on 30 Nov 2020
2020-12-31 ./textproc/php72-wddx: Security Support ends on 30 Nov 2020
2020-12-31 ./textproc/php72-xsl: Security Support ends on 30 Nov 2020
2020-12-31 ./textproc/php72-dom: Security Support ends on 30 Nov 2020
2020-12-31 ./textproc/php72-ctype: Security Support ends on 30 Nov 2020
2020-12-31 ./textproc/php72-xml: Security Support ends on 30 Nov 2020
2020-12-31 ./textproc/php72-simplexml: Security Support ends on 30 Nov 2020

Update PHP 7.2 from 7.2.20 to 7.2.21

Changelog:

    Date:
        Fixed bug #69044 (discrepency between time and microtime).
    EXIF:
        Fixed bug #78256 (heap-buffer-overflow on exif_process_user_comment).
(CVE-2019-11042)
        Fixed bug #78222 (heap-buffer-overflow on exif_scan_thumbnail).
(CVE-2019-11041)
    Fileinfo:
        Fixed bug #78183 (finfo_file shows wrong mime-type for .tga file).
    FTP:
        Fixed bug #77124 (FTP with SSL memory leak).
    Libxml:
        Fixed bug #78279 (libxml_disable_entity_loader settings is shared
between requests (cgi-fcgi)).

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

lang/php72: Upgrade from 7.2.13 to 7.2.14

Changelog:

    Core:
        Fixed bug #77369 (memcpy with negative length via crafted DNS response).
        Fixed bug #71041 (zend_signal_startup() needs ZEND_API).
        Fixed bug #76046 (PHP generates "FE_FREE" opcode on the wrong line).
    COM:
        Fixed bug #77177 (Serializing or unserializing COM objects crashes).
    Date:
        Fixed bug #77097 (DateTime::diff gives wrong diff when the actual diff
is less than 1 second).
    Exif:
        Fixed bug #77184 (Unsigned rational numbers are written out as signed
rationals).
    GD:

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

PHP 7.1 and PHP 7.2: add TEST_TARGET to all extensions

This enables "make test" in every extension and eases
the test of changes to PHP.

I did ignore PHP 7.0 intentionally since it only receives
security updates and will EOL at the end of the year. Therefore
no great amount of work is expected for 7.0.

Add PHP 7.2 RC6

Notable changes:
- mcrypt module was removed
- sodium module was added
- sybase_ct artifacts removed

Also many PECL ports will not work with this version
since some files got renamed.

Reviewed by:           mat, ale, Rainer Duffner <rainer@ultra-secure.de>
Differential Revision: https://reviews.freebsd.org/D12980