packages/HTTP/Request.php is old, should be updated

The PEAR HTTP_Request object is used to make HTTP requests in some places in CiviCRM, but it has been superseded (but not quite deprecated) by HTTP_Request2:
http://pear.php.net/package/HTTP_Request

It's only used in a couple places:

./tools/extensions/org.civicrm.payment.googlecheckout/GoogleCheckout.php
./CRM/Core/Payment/Google.php
./CRM/Utils/System.php
./CRM/Utils/Address/USPS.php
./CRM/Utils/Sunlight.php
./CRM/Utils/Geocode/Google.php

We can replace HTTP_Request with HTTP_Request2 and then update all the code that uses it, or we can replace it all with curl instead.

Should Extension maintainers be notified when package is removed??