Added module declarations to allow "require" statements to work properly

dojo/dojox.string.d.ts

@@ -268,4 +268,25 @@ declare module dojox {
         }
     }
 
-}
+}
+
+declare module "dojox/string/tokenize" {
+    var exp: dojox.string_.tokenize
+    export=exp;
+}
+declare module "dojox/string/sprintf" {
+    var exp: dojox.string_.sprintf
+    export=exp;
+}
+declare module "dojox/string/Builder" {
+    var exp: dojox.string_.Builder
+    export=exp;
+}
+declare module "dojox/string/BidiComplex" {
+    var exp: dojox.string_.BidiComplex
+    export=exp;
+}
+declare module "dojox/string/BidiEngine" {
+    var exp: dojox.string_.BidiEngine
+    export=exp;
+}