fdo#70664 Implement Blob writing (firebird-sdbc).

Change-Id: Ia95c6e1a0ede2103aae25610baeb3c7a9642113a
(cherry picked from commit cb4b290bcfbc5ac73103a557f8de429c3d7d7c3b)
fdo#70664 Allow reading firebird Blob as InputStream.

Change-Id: Ie0cb93a902961b3f37daf435828263478c9d2997
(cherry picked from commit 2b24eec3d4ca50e676c0c3af86ecb92a8eb0a8a2)