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01280ee203
Document the formerly-undocumented behavior that schema and comment control-file entries for an extension are honored only during initial installation, whereas other properties are also honored during updates. While at it, do some copy-editing on the recently-added docs for CREATE EXTENSION ... CASCADE, use links for some formerly vague cross references, and make a couple other minor improvements. Back-patch to 9.6 where CASCADE was added. The other parts of this could go further back, but they're probably not important enough to bother.
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.