Re: GSOC13 proposal - extend RETURNING syntax

Hello,
according to my mentor's suggestion, I send first PoC patch of
"RETURNING AFTER/BEFORE" statement. Some info:
- it is early version - more hack PoC than RC patch
- AFTER in this version works as decribed before but it returns row
after update but before post-update before (to be fixed or switch with
current "*" behaviour - I don't know yet)
- patch passes all regression tests
- the code is uncommented already, to be fixed
I'm not sure what may fail so you use it on your risk ;)
Regards,
Karol