pgsql: Commit newest version of xmlpath().

Log Message:
-----------
Commit newest version of xmlpath().

Nikolay Samokhvalov

Modified Files:
--------------
pgsql/src/backend/utils/adt:
xml.c (r1.36 -> r1.37)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/xml.c.diff?r1=1.36&r2=1.37)
pgsql/src/test/regress/expected:
xml.out (r1.16 -> r1.17)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/xml.out.diff?r1=1.16&r2=1.17)
xml_1.out (r1.14 -> r1.15)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/xml_1.out.diff?r1=1.14&r2=1.15)
pgsql/src/test/regress/sql:
xml.sql (r1.13 -> r1.14)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/sql/xml.sql.diff?r1=1.13&r2=1.14)