Dumping roles improvements?

It occurs to me that we could really use two things to make it easier to
move copies of database stuff around:

pg_dump -r, which would include a CREATE ROLE for all roles needed to
restore the database (probably without passwords), and

pg_dumpall -r --no-passwords which would dump the roles but without
CREATE PASSWORD statements.  This would be useful for cloning databases
for use in Dev, Test and Staging, where you don't what to copy the md5s
of passwords for possible cracking.

-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com