[pgpool-committers: 5101] pgpool: Miscellaneous fixes in the area of SCRAM authentication.

[Muhammad Usama]

Miscellaneous fixes in the area of SCRAM authentication.

The commit takes care of resource leak warnings reported by coverity
in the authentication module of Pgpool-II, Apart from doing the individual
resource leak fixes I have made the authentication system to use the temporary
memory context which gets deleted after the authentication is done.

In addition to the memory related fixes the commit also contains the following.

-- TEXT prefix support for specifying plain text passwords in configuration
and pool_passwd file.
-- Documentation updates to use plain text passwords with TEXT prefix.
-- Fix for 0000427: pg_enc emits wrong warnings
-- Fix for 0000426: Pgpool-II contines to emit warning messages

Branch
------
master

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=536b1557c2cf0b3760449875cd0d11ae91e172e1

Modified Files
--------------
doc/src/sgml/client-auth.sgml         |  10 ++-
doc/src/sgml/connection-settings.sgml |  29 +++++++-
doc/src/sgml/healthcheck.sgml         |   7 ++
doc/src/sgml/online-recovery.sgml     |   7 ++
doc/src/sgml/stream-check.sgml        |   7 ++
doc/src/sgml/watchdog.sgml            |   7 ++
src/auth/auth-scram.c                 |  12 ++--
src/auth/pool_auth.c                  | 125 ++++++++++++++--------------------
src/auth/pool_hba.c                   |  37 ++++++----
src/auth/pool_passwd.c                |  17 +++--
src/include/auth/pool_passwd.h        |   3 +-
src/protocol/child.c                  |  28 +++++++-
12 files changed, 186 insertions(+), 103 deletions(-)