[pgpool-committers: 1694] pgpool: Revert "Fix a segmentation fault in parallel mode with system_d

[Yugo Nagata]

Revert "Fix a segmentation fault in parallel mode with system_db_hostname is empty"

This fix isn't necessary for V3_0_STABLE and does more harm than good.

Branch
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V3_0_STABLE

Details
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http://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=c180cae1e3ea742287978310302d96c39fa2fba5

Modified Files
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doc/pgpool-en.html |    7 +-
doc/pgpool-ja.html |    8 +-
pool_config.c      | 1438 +++++++++++++++++++++++++++++-----------------------
pool_config.l      |   15 +-
4 files changed, 814 insertions(+), 654 deletions(-)