dbi-link - dbi-link: Moved tests to the new test directory.

Log Message:
-----------
Moved tests to the new test directory.
Changed USAGE.txt to reflect current usage
Banged head on monitor trying to figure out why schema-qualified
trigger functions don't seem to exist.

Modified Files:
--------------
dbi-link:
USAGE.txt (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/dbi-link/dbi-link/USAGE.txt.diff?r1=1.1&r2=1.2)
dbi_link.sql (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/dbi-link/dbi-link/dbi_link.sql.diff?r1=1.1&r2=1.2)
make_connection.sql (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/dbi-link/dbi-link/make_connection.sql.diff?r1=1.5&r2=1.6)

Added Files:
-----------
dbi-link/test:
pg.sql (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/dbi-link/dbi-link/test/pg.sql?rev=1.1&content-type=text/x-cvsweb-markup)
settings.xls (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/dbi-link/dbi-link/test/settings.xls?rev=1.1&content-type=text/x-cvsweb-markup)

Removed Files:
-------------
dbi-link:
settings.xls
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/dbi-link/dbi-link/settings.xls)
test_pg.sql
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/dbi-link/dbi-link/test_pg.sql)