Thread: pgsql: Document issues with non-default tablespaces and pg_dumpall

Log Message:
-----------
Document issues with non-default tablespaces and pg_dumpall restores.

Backpatch documentation addition to 8.1.X.

Modified Files:
--------------
    pgsql/doc/src/sgml/ref:
        pg_dumpall.sgml (r1.55 -> r1.56)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_dumpall.sgml.diff?r1=1.55&r2=1.56)
    pgsql/src/bin/pg_dump:
        pg_dumpall.c (r1.79 -> r1.80)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dumpall.c.diff?r1=1.79&r2=1.80)