Fix broken API descriptions in comments.

Include/abstract.h

@@ -350,10 +350,9 @@ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx*/
        /*
 	 Call a callable Python object, callable_object, with a
 	 variable number of C arguments.  The C arguments are provided
-	 as PyObject * values; 'n' specifies the number of arguments
-	 present.  Returns the result of the call on success, or NULL
-	 on failure.  This is the equivalent of the Python expression:
-	 apply(o,args).
+	 as PyObject * values, terminated by a NULL.  Returns the
+	 result of the call on success, or NULL on failure.  This is
+	 the equivalent of the Python expression: apply(o,args).
        */
 
 
@@ -362,10 +361,10 @@ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx*/
 
        /*
 	 Call the method named m of object o with a variable number of
-	 C arguments.  The C arguments are provided as PyObject * values;
-	 'n' specifies the number of arguments present.  Returns the
-	 result of the call on success, or NULL on failure.  This is the
-	 equivalent of the Python expression: o.method(args).
+	 C arguments.  The C arguments are provided as PyObject *
+	 values, terminated by NULL.  Returns the result of the call
+	 on success, or NULL on failure.  This is the equivalent of
+	 the Python expression: o.method(args).
        */