[pgpool-hackers: 702] New regresson test

[Tatsuo Ishii]

Hi,

I have added new regression test to master, 3.4-stable and 3.3 stable
branches for checking memory leaks.

The test executes pgbench -S for a while (currently 30 seconds) and
compare pgpool child process size before and after. If it increases,
the test fails. The test is executed in streaming replication, native
replication and raw mode.

Unfortunately current pgpool-II does not pass the test. So the build
farm will complaining starting tomorrow.

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp