Dev fix: oApi backwards compatiblity issue

- The oApi option wasn't being attached correctly to either the settings
  object or the instance, so plug-ins were breaking. This adds the alias
  back in.

.datatables-commit-sync

@@ -1 +1 @@
-d4add525406017919895968ede583da9ffc73e0a
+b4fbf198ab4d7ed709fd4c35dd3201f877408361

media/js/jquery.dataTables.js

@@ -5361,7 +5361,7 @@
 		 * (check the upgrade notes).
 		 *  @namespace
 		 */
-		this.internal = {
+		this.oApi = this.internal = {
 			"_fnExternApiFunc": _fnExternApiFunc,
 			"_fnInitialise": _fnInitialise,
 			"_fnInitComplete": _fnInitComplete,
@@ -5530,7 +5530,7 @@
 			/* Create the settings object for this table and set some of the default parameters */
 			var oSettings = $.extend( true, {}, DataTable.models.oSettings, {
 				"nTable":        this,
-				"oApi":          _that.oApi,
+				"oApi":          _that.internal,
 				"oInit":         oInit,
 				"sDestroyWidth": $(this)[0].style.width,
 				"sInstance":     sId,