Add USPS Shipping Driver with tests, and i18n.

Change the Ship, Cart to do exception handling when calling a shipping driver,
as that's the message passing interface between the modules.
Add a noFormProcess field property that is recognized by processPropertiesFromFormPost.

docs/changelog/7.x.x.txt

@@ -21,6 +21,7 @@
    transactions. (Martin Kamerbeek / Oqapi )
  - Added better Survey Expression Engine validation warnings
  - added #9203: Survey Visualization
+ - Added: United States Postal Service Shipping Driver.
 
 7.7.5
  - Adding StoryManager.

docs/upgrades/upgrade_7.7.5-7.7.6.pl

@@ -33,6 +33,7 @@ addTemplateAttachmentsTable($session);
 revertUsePacked( $session );
 fixDefaultPostReceived($session);
 addEuVatDbColumns( $session );
+addShippingDrivers( $session );
 addTransactionTaxColumns( $session );
 
 finish($session); 
@@ -91,6 +92,15 @@ EOSQL
     print "DONE!\n" unless $quiet;
 }
 
+#----------------------------------------------------------------------------
+# Describe what our function does
+sub addShippingDrivers {
+    my $session = shift;
+    print "\tAdding columns for improved VAT number checking..." unless $quiet;
+    $session->config->addToArray('shippingDrivers', 'WebGUI::Shop::ShipDriver::USPS');
+    print "DONE!\n" unless $quiet;
+}
+
 #----------------------------------------------------------------------------
 sub addEuVatDbColumns {
     my $session = shift;