dbi-link - dbi-link: Moved Oracle test and example to their own

Log Message:
-----------
Moved Oracle test and example to their own directory.

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