Unable to upgrade to 7.2

Chris Bitmead <chris@bitmead.com>

From: Chris Bitmead <chris@bitmead.com>
To: pgsql-hackers@postgresql.org
Date: 2001-10-20T11:32:10Z
Lists: pgsql-hackers
I just checked out postgresql from CVS, built it and
did a pg_dumpall of my 7.1.3 databases.
When I try and load the data into 7.2 it gives
a bunch of errors like
\N command not found
I guess they are nulls and it can't recognise them
or something.