-- don't just die.

(Reported by Gary Herron.)

This simplified some other places in the code.

Suggested by Jim Hugunin.

only there to override reload() in a way that doesn't make a whole lot
of sense and moreover broke since the latest changes in ihooks.

function is only used when running the calibration code, and it turns
out that recent changes in the timing code caused this statement to
raise an exception.

triggered in situations that are not an error.

system calls.

native format, as void* (translated to Python int or long).
Also adds PyLong_FromVoidPtr and PyLong_AsVoidPtr to longobject.c.

manually generated).

of some paragraphs).

alias delimiter to ';;'.

compiler doesn't grumble.  Greg Stein's suggestion.

there's an __getinitargs__() method), if a TypeError occurs, catch and
reraise it but add info to the error about the class name being
instantiated.  This makes debugging a lot easier if __getinitargs__()
returns something bogus (e.g. a string instead of a singleton tuple).

for callit, used by the after() command.  This can happen when the
callback deletes the window.

initialization of class exceptions.  Specifically:

init_class_exc(): This function now returns an integer status of the
class exception initialization.  No fatal errors in this method now.
Also, use PySys_WriteStderr() when writing error messages.  When an
error occurs in this function, 0 is returned, but the partial creation
of the exception classes is not undone (this happens elsewhere).

Things that could trigger the fallback:

    - exceptions.py fails to be imported (due to syntax error, etc.)

    - one of the exception classes is missing (e.g. due to library
      version mismatch)

    - exception class can't be inserted into __builtin__'s dictionary

    - MemoryError instance can't be pre-allocated

    - some other PyErr_Occurred

newstdexception(): Changed the error message.  This is still a fatal
error because if the string based exceptions can't be created, we
really can't continue.

initerrors(): Be sure to xdecref the .exc field, which might be
non-NULL if class exceptions init was aborted.

_PyBuiltin_Init_2(): If class exception init fails, print a warning
message and reinstate the string based exceptions.

and without a message number argument: the argument was called 'msg'
but the code expected it to be called 'which'.  In line with the other
methods, I've renamed the argument to 'which', and adapted the doc
string not to refer to 'msg'.

This makes it possible to accept that on Linux %w returns "01" instead
of "1", for example.

(Jack Jansen and/or Just van Rossum)

discovered by Marc Lemburg.