UPGRADING CODE for better support with multi-currency

git-svn-id: https://silverstripe-ecommerce.googlecode.com/svn/modules/payment_dps/trunk@4301 950b781c-c544-efab-2f99-90083ee69683
UPGRADING CODE for better support with multi-currency

git-svn-id: https://silverstripe-ecommerce.googlecode.com/svn/modules/payment_dps/trunk@4302 950b781c-c544-efab-2f99-90083ee69683
UPGRADING CODE for better support with multi-currency

git-svn-id: https://silverstripe-ecommerce.googlecode.com/svn/modules/payment_dps/trunk@4303 950b781c-c544-efab-2f99-90083ee69683