Remove expired ports:

2020-07-24 databases/postgresql94-client: PostgreSQL-9.4 has reached end-of-life
2020-07-24 databases/postgresql94-contrib: PostgreSQL-9.4 has reached
end-of-life
2020-07-24 databases/postgresql94-docs: PostgreSQL-9.4 has reached end-of-life
2020-07-24 databases/postgresql94-pgtcl: PostgreSQL-9.4 has reached end-of-life
2020-07-24 databases/postgresql94-plpython: PostgreSQL-9.4 has reached
end-of-life
2020-07-24 databases/postgresql94-server: PostgreSQL-9.4 has reached end-of-life
2020-07-24 databases/postgresql94-pltcl: PostgreSQL-9.4 has reached end-of-life
2020-07-24 databases/postgresql94-plperl: PostgreSQL-9.4 has reached end-of-life

Deprecate PostgreSQL-9.4

Final release was in Fabruary 2020.

WWW:	https://www.postgresql.org/support/versioning/

iThe PostgreSQL Global Development Group has released an update to all
supported versions of our database system, including 11.5, 10.10,
9.6.15, 9.5.19, and 9.4.24, as well as the third beta of PostgreSQL 12.
This release fixes two security issues in the PostgreSQL server, two
security issues found in one of the PostgreSQL Windows installers, and
over 40 bugs reported since the previous release.

Users should install these updates as soon as possible.

A Note on the PostgreSQL 12 Beta
================================

In the spirit of the open source PostgreSQL community, we strongly
encourage you to test the new features of PostgreSQL 12 in your database
systems to help us eliminate any bugs or other issues that may exist.

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

The PostgreSQL Global Development Group has released an update to all
supported versions of our database system, including 11.2, 10.7, 9.6.12,
9.5.16, and 9.4.21. This release changes the behavior in how PostgreSQL
interfaces with `fsync()` and includes fixes for partitioning and over
70 other bugs that were reported over the past three months.

Users should plan to apply this update at the next scheduled downtime.

FreeBSD port adds OPTIONS knob to support LLVM JIT. [1]

Highlight: Change in behavior with fsync()
------------------------------------------

When available in an operating system and enabled in the configuration
file (which it is by default), PostgreSQL uses the kernel function

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

Chase USES=pgsql in pgtcl slaves

Add -docs, -plgtcl, -plperl, -plpython and -pltcl to the flora of
postgresql94-ports