[pgpool-committers: 1852] pgpool: Fix a segmentation fault in parallel mode with system_db_hostna

[Muhammad Usama]

Fix a segmentation fault in parallel mode with system_db_hostname is empty

When system_db_hostname is empty, unix domain socket should be used.
However, the directory containing the socket file was't specified in this
case, and the initialization of system DB connection failed. This caused
segmentation fault, when processing a query to system db.

Branch
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EXCEPTION_MGR

Details
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http://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=677ac62ff0c92953db1cc48aebf228d7c7a87a1a
Author: Yugo Nagata <nagata at sraoss.co.jp>

Modified Files
--------------
doc/pgpool-en.html       |    8 +-
doc/pgpool-ja.html       |    5 +-
src/config/pool_config.c | 4977 ----------------------------------------------
src/config/pool_config.l |   41 +-
4 files changed, 33 insertions(+), 4998 deletions(-)