[pgpool-committers: 8837] pgpool: Doc: enhance description about memqcache_method.

[Tatsuo Ishii]

Doc: enhance description about memqcache_method.

Add explanation which method should be used.

Backpatch-through: 3.7.

Branch
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V4_3_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=0acb52bfa4c4a5fa68f5346ec50085550961c56b

Modified Files
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doc.ja/src/sgml/memcache.sgml | 27 +++++++++++++++++++++++++++
doc/src/sgml/memcache.sgml    | 18 +++++++++++++++++-
2 files changed, 44 insertions(+), 1 deletion(-)