UNPACK_LIST byte codes and added a third code path that allows
generalized sequence unpacking.  Now both syntaxes:

    a, b, c = seq
    [a, b, c] = seq

can be used to unpack any sequence with the exact right number of
items.

unpack_sequence(): out-lined implementation of generalized sequence
unpacking.  tuple and list unpacking are still inlined.

former lets you give an instance a set of new instance vars.  The
latter lets you give it a new class.  Both are typechecked and
disallowed in restricted mode.

For classes, the check for read-only special attributes is tightened
so that only assignments to __dict__, __bases__, __name__,
__getattr__, __setattr__, and __delattr__ (these could be made to work
as well, but I don't know if that's useful -- let's see first whether
mucking with instances will help).

sys/types.h header on many systems that may get pulled in (through
WANT_SIGFPE_HANDLER which pulls in signal.h).

docstring conversion).

PyErr_GivenExceptionMatches().

set_exc_info(): make sure to normalize exceptions.

do_raise(): Use PyErr_NormalizeException() if type is a class.

loop_subscript(): Use PyErr_ExceptionMatches() instead of raw pointer
compare for PyExc_IndexError.

- int PyErr_GivenExceptionMatches(obj1, obj2)

  Returns 1 if obj1 and obj2 are the same object, or if obj1 is an
  instance of type obj2, or of a class derived from obj2

- int PyErr_ExceptionMatches(obj)

  Higher level wrapper around PyErr_GivenExceptionMatches() which uses
  PyErr_Occurred() as obj1.  This will be the more commonly called
  function.

- void PyErr_NormalizeException(typeptr, valptr, tbptr)

  Normalizes exceptions, and places the normalized values in the
  arguments.  If type is not a class, this does nothing.  If type is a
  class, then it makes sure that value is an instance of the class by:

  1. if instance is of the type, or a class derived from type, it does
     nothing.

  2. otherwise it instantiates the class, using the value as an
     argument.  If value is None, it uses an empty arg tuple, and if
     the value is a tuple, it uses just that.

classes as their second arguments.  The former takes a class as the
first argument and returns true iff first is second, or is a subclass
of second.

The latter takes any object as the first argument and returns true iff
first is an instance of the second, or any subclass of second.

Also, change all occurances of pointer compares against
PyExc_IndexError with PyErr_ExceptionMatches() calls.

the executable must have that suffix.  Note that there is no
corresponding support in the top-level Makefile because I'm not sure
that the install targets there make sense under these circumstances.

saves re-generation of images).

Add l2hclean target.

class wins.  Makes more sense.

	\bar{Besocial} --> \var{besocial}
	     ^--- note case ----^

The fixed version matches the signature.  Changed "\bar{Besocial} gives ..."
to "The \var{besocial} flag gives ..." to keep from starting the sentence
with a lowercase token.

(The \bar{} --> \var{} change was required to keep LaTeX happy.)

crash due to GvR's last check in message :-).  Will try to convince JF
to remove all this evilness.

#ifdef though, so if you still need these for a really backwards
compiler you know what to do.

*before* adding signalmodule.o, because some ar programs
are too smart for us...

-D_HPUX_SOURCE"' on HP 9.x and 10.x platforms.

use -Ae).

Added Cray T3E comments.

in GNU libc on some platforms.

Windows/Mac).