pgsql: I made the patch that implements regexp_replace again.

Log Message:
-----------
I made the patch that implements regexp_replace again.
The specification of this function is as follows.

regexp_replace(source text, pattern text, replacement text, [flags
text])
returns text

Replace string that matches to regular expression in source text to
replacement text.

- pattern is regular expression pattern.
- replacement is replace string that can use '\1'-'\9', and '\&'.
'\1'-'\9': back reference to the n'th subexpression.
'\&' : entire matched string.
- flags can use the following values:
g: global (replace all)
i: ignore case
When the flags is not specified, case sensitive, replace the first
instance only.

Atsushi Ogawa

Modified Files:
--------------
pgsql/doc/src/sgml:
func.sgml (r1.263 -> r1.264)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml.diff?r1=1.263&r2=1.264)
pgsql/src/backend/regex:
regexec.c (r1.24 -> r1.25)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/regex/regexec.c.diff?r1=1.24&r2=1.25)
pgsql/src/backend/utils/adt:
regexp.c (r1.56 -> r1.57)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/regexp.c.diff?r1=1.56&r2=1.57)
varlena.c (r1.126 -> r1.127)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/varlena.c.diff?r1=1.126&r2=1.127)
pgsql/src/include/catalog:
catversion.h (r1.286 -> r1.287)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/catalog/catversion.h.diff?r1=1.286&r2=1.287)
pg_proc.h (r1.374 -> r1.375)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/catalog/pg_proc.h.diff?r1=1.374&r2=1.375)
pgsql/src/include/regex:
regex.h (r1.26 -> r1.27)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/regex/regex.h.diff?r1=1.26&r2=1.27)
pgsql/src/include/utils:
builtins.h (r1.259 -> r1.260)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/utils/builtins.h.diff?r1=1.259&r2=1.260)
pgsql/src/test/regress/expected:
strings.out (r1.25 -> r1.26)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/strings.out.diff?r1=1.25&r2=1.26)
pgsql/src/test/regress/sql:
strings.sql (r1.16 -> r1.17)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/sql/strings.sql.diff?r1=1.16&r2=1.17)