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About half of this is purely cosmetic changes to reduce the diff between our code and theirs, like inserting "const" markers where they have them. The other half is tracking actual code changes in zic.c and localtime.c. I don't think any of these represent near-term compatibility hazards, but it seems best to stay up to date. I also fixed longstanding bugs in our code for producing the known_abbrevs.txt list, which by chance hadn't been exposed before, but which resulted in some garbage output after applying the upstream changes in zic.c. Notably, because upstream removed their old phony transitions at the Big Bang, it's now necessary to cope with TZif files containing no DST transition times at all.
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: https://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 https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.
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