[pgpool-committers: 5788] pgpool: Doc: add general description about failover.

[Tatsuo Ishii]

Doc: add general description about failover.

Branch
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V4_0_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=a899be102dca24054a1caf16c4d38dffcfca0b7e

Modified Files
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doc.ja/src/sgml/failover.sgml | 50 ++++++++++++++++++++++++-
doc/src/sgml/failover.sgml    | 86 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 135 insertions(+), 1 deletion(-)