patch for implementing SPI_gettypemod()

Hi All,

This is regarding the TODO item :
"Add SPI_gettypmod() to return a field's typemod from a TupleDesc"

The related message is:
http://archives.postgresql.org/pgsql-hackers/2005-11/msg00250.php

This basically talks about having an SPI_gettypemod() which returns the typmod of a field of tupdesc

Please refer the attached patch based on the suggested implementation.


Regards,
Chetan

--