pgsql-server: Allow psql to use 7.4.X database by not referencing

Log Message:
-----------
Allow psql to use 7.4.X database by not referencing tablespaces.

Greg Sabino Mullan

Modified Files:
--------------
pgsql-server/src/bin/psql:
describe.c (r1.103 -> r1.104)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/bin/psql/describe.c.diff?r1=1.103&r2=1.104)
settings.h (r1.18 -> r1.19)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/bin/psql/settings.h.diff?r1=1.18&r2=1.19)
startup.c (r1.96 -> r1.97)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/bin/psql/startup.c.diff?r1=1.96&r2=1.97)