Fix: bytes.__init__ did not accept keywords

Author: fangerer

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/bytes/BytesBuiltins.java

@@ -118,6 +118,7 @@
 import com.oracle.graal.python.nodes.function.builtins.PythonQuaternaryClinicBuiltinNode;
 import com.oracle.graal.python.nodes.function.builtins.PythonTernaryClinicBuiltinNode;
 import com.oracle.graal.python.nodes.function.builtins.PythonUnaryBuiltinNode;
+import com.oracle.graal.python.nodes.function.builtins.PythonVarargsBuiltinNode;
 import com.oracle.graal.python.nodes.function.builtins.clinic.ArgumentCastNode;
 import com.oracle.graal.python.nodes.function.builtins.clinic.ArgumentCastNode.ArgumentCastNodeWithRaiseAndIndirectCall;
 import com.oracle.graal.python.nodes.function.builtins.clinic.ArgumentClinicProvider;
@@ -217,13 +218,19 @@ public static byte[] doEncode(Charset charset, String string, CodingErrorAction
         return barr;
     }
 
-    @Builtin(name = __INIT__, minNumOfPositionalArgs = 1, takesVarArgs = true)
+    @Builtin(name = __INIT__, minNumOfPositionalArgs = 1, takesVarArgs = true, takesVarKeywordArgs = true)
     @GenerateNodeFactory
-    public abstract static class InitNode extends PythonBuiltinNode {
+    public abstract static class InitNode extends PythonVarargsBuiltinNode {
+
+        @SuppressWarnings("unused")
+        @Override
+        public Object varArgExecute(VirtualFrame frame, Object self, Object[] arguments, PKeyword[] keywords) throws VarargsBuiltinDirectInvocationNotSupported {
+            return PNone.NONE;
+        }
 
         @SuppressWarnings("unused")
         @Specialization
-        public Object byteDone(VirtualFrame frame, PBytes self, Object args) {
+        static Object byteDone(VirtualFrame frame, Object self, Object[] arguments, PKeyword[] keywords) {
             return PNone.NONE;
         }
     }