pgsql: Add support for ICU 4.2

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Add support for ICU 4.2
Date: 2017-08-05 13:36:31
Message-ID: E1ddzFn-0005x5-N0@gemulon.postgresql.org
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Add support for ICU 4.2

Supporting ICU 4.2 seems useful because it ships with CentOS 6.

Versions before ICU 4.6 don't support pkg-config, so document an
installation method without using pkg-config.

In ICU 4.2, ucol_getKeywordsForLocale() sometimes returns values that
will not be accepted by uloc_toLanguageTag(). Skip loading keyword
variants in that version.

Reported-by: Victor Wagner <vitus(at)wagner(dot)pp(dot)ru>

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/eccead9ed43dc6e653c76dce1d2f455d251bb00c

Modified Files
--------------
doc/src/sgml/installation.sgml | 22 +++++++++++++++++++---
src/backend/commands/collationcmds.c | 11 +++++++++++
2 files changed, 30 insertions(+), 3 deletions(-)

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