fcl-db: dbtestframework, Oracle:
* Fix for Oracle not accepting string literals in INSERT INTO statement for BLOB fields.
  Use hex encoding instead.
  Note: probably will have to review BLOB .AsString code in Oracle connector as well



git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@26902 3ad0048d-3df7-0310-abae-a5850022a9f2