Log Message:-----------Update discussion of ALTER TABLE ADD COLUMN, per Michael Fuhr.
Modified Files:-------------- pgsql/doc/src/sgml: ddl.sgml (r1.36 -> r1.37) (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ddl.sgml.diff?r1=1.36&r2=1.37)
