oratcl SvnCode

Thanks to Miguel Bagnon (bagnonm@...) for the alert.
- Added support for describing user defined types to Oracols and
Oradesc. Began work for a test suite file.
Thanks to Olly Stephens (ollystephens@...) for the patch.
- Changed a bogus error message in [orainfo server $lda].
- Added a 'status' option to 'orainfo' that returns the server status.
Example: orainfo status $lda
Returns 1 if server status is OCI_SERVER_NORMAL
Returns 0 if server status is OCI_SERVER_NOT_CONNECTED
This is useful for detected loss of server, due to crash or shutdown.