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0ba71107ef
This partially reverts 096bbf7 and 9d2d457, undoing the libpq changes as it could cause breakages in distributions that share one single libpq version across multiple major versions of Postgres for extensions and applications linking to that. Note that the backend is unchanged here, and it still disables SSL compression while simplifying the underlying catalogs that tracked if compression was enabled or not for a SSL connection. Per discussion with Tom Lane and Daniel Gustafsson. Discussion: https://postgr.es/m/YEbq15JKJwIX+S6m@paquier.xyz
The PostgreSQL contrib tree
---------------------------
This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree. This does not preclude their
usefulness.
User documentation for each module appears in the main SGML
documentation.
When building from the source distribution, these modules are not
built automatically, unless you build the "world" target. You can
also build and install them all by running "make all" and "make
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.
Some directories supply new user-defined functions, operators, or
types. To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command. In a fresh database,
you can simply do
CREATE EXTENSION module_name;
See the PostgreSQL documentation for more information about this
procedure.