Init globals before lowering CTCE, allows CTCE to use imported functions, etc.

stdlib/string.krak

@@ -180,6 +180,7 @@ obj string (Object, Serializable) {
     }
 
     fun operator+(integer: int): string return *this + to_string(integer);
+    fun operator+(integer: ulong): string return *this + to_string(integer);
     /*fun operator+(b: bool): string return *this + to_string(b);*/
 
     fun operator+(str: *char): string {
@@ -194,6 +195,7 @@ obj string (Object, Serializable) {
     }
 
     fun operator+=(integer: int) *this += to_string(integer);
+    fun operator+=(integer: ulong) *this += to_string(integer);
     /*fun operator+=(b: bool) *this += to_string(b);*/
 
     fun operator+=(character: char): void {