Обсуждение: pgsql: Add a 64-bit hash function for type hstore.

Add a 64-bit hash function for type hstore.

There's some question about the correctness of the hash function, but
if it's wrong, the 32-bit version is also wrong.

Amul Sul, reviewed by Hironobu Suzuki

Discussion: https://postgr.es/m/CAAJ_b947JjnNr9Cp45iNjSqKf6PA5mCTmKsRwPjows93YwQrmw@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/eb6f29141bed9dc95cb473614c30f470ef980705

Modified Files
--------------
contrib/hstore/Makefile             |  4 +++-
contrib/hstore/expected/hstore.out  | 12 ++++++++++++
contrib/hstore/hstore--1.5--1.6.sql | 12 ++++++++++++
contrib/hstore/hstore.control       |  2 +-
contrib/hstore/hstore_op.c          | 30 +++++++++++++++++++++++++++---
contrib/hstore/sql/hstore.sql       |  9 +++++++++
6 files changed, 64 insertions(+), 5 deletions(-)