databases/postgresql11: Sunset

databases/postgresql11-*: Mark DEPRECATED

- postgresql 11 is set to reach EOL on 2023-11-09
  See : https://www.postgresql.org/support/versioning/
- Set EXPIRATION_DATE on 2023-12-31
- Fix CONFLICTS for postgresql11-pgtcl

*/*: Remove redundant '-*' from CONFLICTS definitions

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").

Approved by: portmgr (blanket)

*/*: Remove redundant '-[0-9]*' from CONFLICTS

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)

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

Remove # $FreeBSD$ from Makefiles.

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 today announced the release of
PostgreSQL 11, the latest version of the world's most advanced open
source database.

PostgreSQL 11 provides users with improvements to overall performance of
the database system, with specific enhancements associated with very
large databases and high computational workloads. Further, PostgreSQL 11
makes significant improvements to the table partitioning system, adds
support for stored procedures capable of transaction management,
improves query parallelism and adds parallelized data definition
capabilities, and introduces just-in-time (JIT) compilation for
accelerating the execution of expressions in queries.

"For PostgreSQL 11, our development community focused on adding features
that improve PostgreSQL's ability to manage very large databases," said