Previously it was called another time via hasattr(), and both calls were
made once for dir(f) and again for dir(f.__class__).  This includes a
backport of changing from a list to a set from revision 4dbb315fe667.

This was a regression caused by revision 1da9630e9b7f.  Based on patch by
Eryksun.

operations in C implementation of OrderedDict.

operations in C implementation of OrderedDict.

address the compatibility problem introduced by the addition of IDLE Dark.
Consistently use the revised idleConf.CurrentTheme everywhere in idlelib.

parse command line arguments.

parse command line arguments.

parse command line arguments.

rejects builtin types with not defined __new__.
Added tests for non-pickleable types.

rejects builtin types with not defined __new__.
Added tests for non-pickleable types.

rejects builtin types with not defined __new__.
Added tests for non-pickleable types.