Merge pull request #4865 from eileenmcnaughton/my-first-factory

CRM-15771 - CRM_Core_Payment - Replace singletons with manager class

diff --cc CRM/Core/Payment.php
Simple merge

diff --cc CRM/Core/Payment/AuthorizeNet.php
Simple merge

diff --cc CRM/Core/Payment/Dummy.php
Simple merge

diff --cc CRM/Core/Payment/FirstData.php
Simple merge

diff --cc CRM/Core/Payment/PaymentExpress.php
Simple merge

diff --cc CRM/Core/Payment/Realex.php
Simple merge

diff --cc CRM/Core/Payment/eWAY.php
Simple merge