ENHANCEMENT Added DataObject->hasOwnTableDatabaseField(), replaced legacy usage of fieldExists()
ENHANCEMENT Renamed cached static "fieldExists" to "_cache_hasOwnTableDatabaseField"
ENHANCEMENT Added DataObjectTest test cases for checking various field existence levels
API CHANGE Deprecated DataObject->listOfFields() - use custom code instead
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@63337 467b73ca-7a2a-4603-9d3b-597d59a354a9
Improved DataObjectTest to use more helpful assertions
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@60572 467b73ca-7a2a-4603-9d3b-597d59a354a9