ECPG SQLDA support

Hi,

new patch attached.

Per Michael's request, a DB2 / Sybase compatible
SQLDA structure is implemented for ECPG's native mode.
The Informix-compatible structure is only for compat mode.
The sqlda.h header switches between the two different
structures depending on a new #define introduced in
and added to the generated C source by the preprocessor
in compat-mode. Also, per discussion with Michael,
     FETCH ... USING DESCRIPTOR sqlda
is also accepted by the grammar in native mode, too.

Best regards,
Zoltán Böszörményi

--
Bible has answers for everything. Proof:
"But let your communication be, Yea, yea; Nay, nay: for whatsoever is more
than these cometh of evil." (Matthew 5:37) - basics of digital technology.
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Zoltán Böszörményi
Cybertec Schönig & Schönig GmbH
http://www.postgresql.at/