Patch for cursor calling with named parameters

Hello list,

The following patch implements cursor calling with named parameters in 
addition to the standard positional argument lists.

c1 cursor (param1 int, param2 int) for select * from rc_test where a > 
param1 and b > param2;
open c1($1, $2);                     -- this is currently possible
open c1(param2 := $2, param1 := $1); -- this is the new feature

Especially for cursors with a lot of arguments, this increases 
readability of code. This was discussed previously in 
http://archives.postgresql.org/pgsql-hackers/2010-09/msg01433.php. We 
actually made two patches: one with => and then one with := notation. 
Attached is the patch with := notation.

Is it ok to add it to the next commitfest?

regards,
Yeb Havinga, Willem Dijkstra

-- 
Yeb Havinga
http://www.mgrid.net/
Mastering Medical Data