[turba] [patch] fix oracle clob support

[Chuck Hagenbuch]

Quoting Matt Selsky <selsky at columbia.edu>:

> The attached patch fixes Oracle CLOB support in Turba v1.2.2.  Bind
> variables must be used in order to allow Oracle to take advantage of
> CLOBs and be able to fix more than 4K of data in CLOB fields.
>
> This patch is not database specific.

Cleaned up and committed (to HEAD also), thanks!

-chuck

--
"Regard my poor demoralized mule!" - Juan Valdez