CRM-15296 test for behaviour on renew with recurring

CRM-15296 mark incomplete portion of this test as incomplete so as not to commit failing tests
note that the incomplete part can be enabled when th issue is fixed

Alter Dummy processor to be test-friendly

Conflicts:
	tests/phpunit/api/v3/ContributionPageTest.php

wq!
Merge pull request #4255 from eileenmcnaughton/CRM-15296-unittest

Crm 15296 unittest