Added quick reference.

Changed #ifdef DEBUG slightly.

examples, which no longer live here.

Add mktime() overflow test and make it NeXT robust by initializing
the structure from localtime().

Include config.h which may define COMPILER.

dir(object) now returns object.__dict__.keys() even if __dict__ is not
a dictionary.

Add Py_mport_Init and PyBuiltin_Init.

Include pydebug.h instead of declaring Py_FatalError.