Update community URL and introduction/acknowledgement sections

[GoogleCodeExporter]

Currently the first section of the UPC spec 1.2 and the working draft 1.3 both 
list our "community" URLs as:

    http://www.upcworld.org  and
    http://upc.gwu.edu

Where the first is currently a redirect to the second. 

The GWU site has become somewhat out of date and does not appear to be actively 
maintained (or permit editing by other groups).

We should probably update the spec to reference an active community site. 

Options include:

* Leave as-is and find a way to update the GWU site
* Change second URL to http://upc-lang.org
* Change second URL to http://code.google.com/p/upc-specification/ (ie this 
site)
* Remove the second URL and update the first redirect regularly to point at the 
current "best" community site(s)
* Remove all URLs and let people use search engines

Original issue reported on code.google.com by danbonachea on 3 Nov 2012 at 3:36

[GoogleCodeExporter]

"Remove all URLs and let people use search engines" is the best way to be 
correct unless someone is committed to keeping the links up-to-date for years.  
GWU appears to have failed at this task.

Original comment by jeff.science@gmail.com on 5 Nov 2012 at 3:32

[GoogleCodeExporter]

At the 2/11/13 telecon, Bill agreed to progress this issue and propose 
finalized changes to the introductory sections by the end of February.

Original comment by danbonachea on 11 Feb 2013 at 8:33

• Changed title: Update community URL and introduction/acknowledgement sections

[GoogleCodeExporter]

Suggested Change sent to mailing list

Original comment by w...@uuuuc.us on 25 Feb 2013 at 8:45

• Changed state: PendingApproval

[GoogleCodeExporter]

committed as SVN r210

Original comment by danbonachea on 30 Apr 2013 at 5:23

• Changed state: Fixed

[GoogleCodeExporter]

Ratified in the 5/22 telecon.

Original comment by danbonachea on 3 Aug 2013 at 3:55

• Changed state: Ratified