Log Message:
-----------
Add TODO:
o consider using pg_depend for checking object usage in version.c
Modified Files:
--------------
pg_migrator:
TODO (r1.20 -> r1.21)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pg-migrator/pg_migrator/TODO?r1=1.20&r2=1.21)