Log Message:
-----------
Add docs for a couple of formerly-undocumented geometric conversion functions.
Tags:
----
REL8_0_STABLE
Modified Files:
--------------
pgsql/doc/src/sgml:
func.sgml (r1.234.4.1 -> r1.234.4.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml.diff?r1=1.234.4.1&r2=1.234.4.2)