db-lib: support for new MS SQL 2008 data types - part 3

Hi again,
Now I am personally happy with patched db-lib in regards of support new 
DATE - TIME data types.
But there are still missing some parts, which may be interesting to 
somebody else.
I meant dbbind() family of API with corresponding *BIND constants and 
binary structure used to store this types.

How to handle binding of new date, time types ?

- introduce new DBDATETIMEALLBIND (or DBDATETIME2BIND) constant in sybdb.h ?
- introduce new DBDATETIMEALL struct (==TDS_DATETIMEALL struct) in 
sybdb.h  ?
- add support to copy_data_to_host_var() function in dblib.c ?

If you give me direction I can prepare patch ...
(if it is good idea add support for BINDing ?)
Thanks
-Laco.