[pgpool-committers: 5540] pgpool: Allow to set a client cipher list.

[Tatsuo Ishii]

Allow to set a client cipher list.

For this purpose new parameter "ssl_ciphers" is added. This is already
implemented in PostgreSQL and useful to enhance security when SSL is
enabled.

Branch
------
V3_4_STABLE

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=3f8d1f0e62451c094249248e2a6de98c5bad3e84

Modified Files
--------------
src/config/pool_config.c                   | 439 +++++++++++++++--------------
src/config/pool_config.l                   |  27 +-
src/include/pool_config.h                  |   1 +
src/sample/pgpool.conf.sample              |   4 +-
src/sample/pgpool.conf.sample-master-slave |   4 +-
src/sample/pgpool.conf.sample-replication  |   4 +-
src/sample/pgpool.conf.sample-stream       |   4 +-
src/utils/pool_process_reporting.c         |   5 +
src/utils/pool_ssl.c                       |   7 +
9 files changed, 278 insertions(+), 217 deletions(-)