Log Message:
-----------
Clarify wording on when ctid is modified by VACUUM FULL.
Modified Files:
--------------
pgsql/doc/src/sgml:
ddl.sgml (r1.70 -> r1.71)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ddl.sgml.diff?r1=1.70&r2=1.71)