magento/bugathon_march_2013 — pull request #219 by kalenjordan (2013-03-10 00:37:36+00:00)
Title:   #79: Before entering into the switch to apply different rule types,

adding a method to check whether the rule should be processed at
all. For Buy X, Get Y free rules, if the cart doesn't match
the Buy X, it doesn't get processed.