[pgpool-committers: 8969] pgpool: Doc: enhance description about memqcache_method.

[Bo Peng]

Doc: enhance description about memqcache_method.

Add explanation which method should be used.

Backpatch-through: 3.7.

Branch
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V4_0_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=88f276ce3584cb9921d909b6867b02d4b5ad6147
Author: Tatsuo Ishii <ishii at sraoss.co.jp>

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(-)