select: in case of TypeError, use the same message that standard select uses.

However, keep printing the repr of the offending object

gevent/select.py

@@ -15,7 +15,7 @@ def get_fileno(obj):
         fileno_f = obj.fileno
     except AttributeError:
         if not isinstance(obj, int):
-            raise TypeError("Must be int or have fileno() method: %r" % (obj, ))
+            raise TypeError('argument must be an int, or have a fileno() method: %r' % (obj, ))
         return obj
     else:
         return fileno_f()