Log Message:
-----------
Document that "Q" is ignored by to_date and to_timestamp.  Add C comment
about the behavior.

Document that quotes in to_date, to_timestamp, to_number skip input
characters.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        func.sgml (r1.506 -> r1.507)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml?r1=1.506&r2=1.507)
    pgsql/src/backend/utils/adt:
        formatting.c (r1.168 -> r1.169)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/formatting.c?r1=1.168&r2=1.169)

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Next:	From: Bruce Momjian	Date: 2010-03-03 23:38:44
	Subject: pgsql: Add C comment about DDL changes possibly causing pg_dump errors.
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