Patch for ssqls null blob deficiency

[Russell Robinson]

Hi All,

I described a bug/deficiency in SSQLS with null blobs here:
	http://lists.mysql.com/plusplus/8007

Warren pointed out that Null is not a transparent wrapper,
however, the SSQLS code works fine for all types, including Text, except 
Blobs.

The attached patch rectifies this anomaly.

I've followed the instructions from SVN in HACKERS.txt.

I've created a 12th unit test which won't compile without the patch being 
applied.  WIth the patch applied, the new unit test compiles and executes OK.

There are no changes to the bmark.txt output - it doesn't count the number of 
unit tests or their output, apparently.

AFAIK, this patch can be applied to any MYSQL++ source. It mainly adds several 
lines to:
	stadapter.cpp
	stadapter.h

(It also creates the 12th unit test, of course.)

-- 
Russell Robinson (russellr@stripped)

Attachment: [text/x-diff] ssqlsnullblob.patch