Show how many versions an URL has on the search result page

[GoogleCodeExporter]

In the search results page, show how many different versions that result URL 
has.

For example, instead of:
----------------------------------
FCCN Home Page
31 Dezembro, 2010 - other dates
FCCN Home Page FCCN World Wide Web server Esta página em português Available 
Services: RCCN Trouble Tickets System RCCN accounting FCCN anonymous ftp server 
The Scientist journal Portuguese Home Page European Home Page World Home page 
Fundação para a Computação Científica Nacional (FCCN) Av. Brasil ... 
http://www.fccn.pt/index_i.html 
----------------------------------

We could present the number of versions near the "other dates" link:
----------------------------------
FCCN Home Page
31 Dezembro, 2010 - other dates (6)
FCCN Home Page FCCN World Wide Web server Esta página em português Available 
Services: RCCN Trouble Tickets System RCCN accounting FCCN anonymous ftp server 
The Scientist journal Portuguese Home Page European Home Page World Home page 
Fundação para a Computação Científica Nacional (FCCN) Av. Brasil ...
http://www.fccn.pt/index_i.html 
----------------------------------

Or we could present additional information at the bottom of the result entry:
----------------------------------
FCCN Home Page
31 Dezembro, 2010 - other dates
FCCN Home Page FCCN World Wide Web server Esta página em português Available 
Services: RCCN Trouble Tickets System RCCN accounting FCCN anonymous ftp server 
The Scientist journal Portuguese Home Page European Home Page World Home page 
Fundação para a Computação Científica Nacional (FCCN) Av. Brasil ... 
http://www.fccn.pt/index_i.html — 6 versions from 1996 to 2005
----------------------------------

Original issue reported on code.google.com by devel.da...@vcruz.net on 7 Dec 2011 at 2:14