Add support for logging the current role.

Stephen Frost, with some editorialization by me.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=a8a8867912c46a68c9ac14903b3dba2fab8f7097

Modified Files
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doc/src/sgml/config.sgml       |    7 ++++++-
src/backend/utils/error/elog.c |   10 ++++++++++
2 files changed, 16 insertions(+), 1 deletions(-)

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Next:	From: Robert Haas	Date: 2011-01-12 17:00:27
	Subject: pgsql: Revert patch adding support for logging the current role.
Previous:	From: Andrew Dunstan	Date: 2011-01-12 03:28:21
	Subject: pgsql: Unbreak regression tests, apparently broken by commit 4c8e20f