pgsql: Various fixes in the logic of XML functions: - Add new SQL - Mailing list pgsql-committers

Log Message:
-----------
Various fixes in the logic of XML functions:

- Add new SQL command SET XML OPTION (also available via regular GUC) to
  control the DOCUMENT vs. CONTENT option in implicit parsing and
  serialization operations.

- Subtle corrections in the handling of the standalone property in
  xmlroot().

- Allow xmlroot() to work on content fragments.

- Subtle corrections in the handling of the version property in
  xmlconcat().

- Code refactoring for producing XML declarations.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        config.sgml (r1.105 -> r1.106)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/config.sgml.diff?r1=1.105&r2=1.106)
        datatype.sgml (r1.185 -> r1.186)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/datatype.sgml.diff?r1=1.185&r2=1.186)
    pgsql/src/backend/executor:
        execQual.c (r1.208 -> r1.209)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/execQual.c.diff?r1=1.208&r2=1.209)
    pgsql/src/backend/parser:
        gram.y (r2.576 -> r2.577)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/gram.y.diff?r1=2.576&r2=2.577)
        keywords.c (r1.183 -> r1.184)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/keywords.c.diff?r1=1.183&r2=1.184)
        parse_expr.c (r1.208 -> r1.209)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/parse_expr.c.diff?r1=1.208&r2=1.209)
    pgsql/src/backend/utils/adt:
        xml.c (r1.21 -> r1.22)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/xml.c.diff?r1=1.21&r2=1.22)
    pgsql/src/backend/utils/misc:
        guc.c (r1.370 -> r1.371)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/guc.c.diff?r1=1.370&r2=1.371)
        postgresql.conf.sample (r1.205 -> r1.206)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/postgresql.conf.sample.diff?r1=1.205&r2=1.206)
    pgsql/src/include/utils:
        xml.h (r1.12 -> r1.13)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/utils/xml.h.diff?r1=1.12&r2=1.13)
    pgsql/src/test/regress/expected:
        xml.out (r1.12 -> r1.13)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/xml.out.diff?r1=1.12&r2=1.13)
        xml_1.out (r1.10 -> r1.11)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/xml_1.out.diff?r1=1.10&r2=1.11)
    pgsql/src/test/regress/sql:
        xml.sql (r1.9 -> r1.10)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/sql/xml.sql.diff?r1=1.9&r2=1.10)