FreeTDS Development Group

["James K. Lowden" <jklowden AT freetds.org>]

The FreeTDS implementation of dbbind() was at odds with the documentation:
it accepted -1 as a length to mean "buffer is big enough".  Documentation
from both vendors says the proper value is zero, not -1.  I must say I'm
amazed no one pointed that out before.  

dbbind() now fails if varlen < 0.  I was unable to find an appropriate
error message, so it doesn't call the error handler; it just fails with a
message to the log.  

I changed dbbind, bsqldb, and about 15 unittests.  Unfortunately, I can't
commit the changes now because SF is having server difficulties afaict. 
So the patch is attached in case you want it.  

--jkl

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