This should eliminate the traceback returned by sys.exc_info() as a
common source of memory leaks.

used by the weakref code since he didn't like the word "referencable".
Is it really necessary to be more specific than to test for TypeError here,
though?

template string, and don't call the template compiler if we can
avoid it.

failobj has to be a list or the `+' can fail.

    Don't put paren in column 0 (to please font-lock mode).
    Put space after comma in argument list.

    the curses module.  It's not run automatically; '-u curses' must be
    specified as an argument to regrtest

Mozilla 0.9.5 can make intelligent use of them.  Specifically, this causes
the "Acknowledgements" and "Global Module Index" pages to acquire "up"
links in the Mozilla "Site Navigation Bar".
This partially responds to SF bug #469772.

differences by defining symbols not defined on particular platforms.
This closes SF bug #473433.

\filename{} should be \file{}

(sorry, barry)

response to a message by Laura Creighton on c.l.py.  E.g.

    >>> 0+''
    TypeError: unsupported operand types for +: 'int' and 'str'

(previously this did not mention the operand types)

    >>> ''+0
    TypeError: cannot concatenate 'str' and 'int' objects

There really isn't a good reason for instance method objects to have
their own __dict__, __doc__ and __name__ properties that just delegate
the request to the function (callable); the default attribute behavior
already does this.

The test suite had to be fixed because the error changes from
TypeError to AttributeError.

(formerly these were silently ignored).  The only built-in methods
that take keyword arguments are __call__, __init__ and __new__.

checking in changes.  The test suite requires consistent use of spaces
and tabs.)

This fixes SF bug: [ #473491 ] "install -d" doesn't work on HP-UX.

  #230075 ] dbmmodule build fails on Debian GNU/Linux unstable (Sid)".

- Build bsddb module with libdb3 if it's available.  It also fixes a bug that
  causes the build of bsddb to fail on Debian if bsddb3-dev is installed.

strings, not C strings)

removed USE_PYTHON defines, and related sre.py helpers

skip calling the subx helper if the template is callable.
interestingly enough, this means that

	def callback(m):
	    return literal
	result = pattern.sub(callback, string)

is much faster than

	result = pattern.sub(literal, string)

check to the test suite.

added a few missing exception checks in the _sre module

removed (conceptually flawed) getliteral helper; the new sub/subn code
uses a faster code path for literal replacement strings, but doesn't
(yet) look for literal patterns.

added STATE_OFFSET macro, and use it to convert state.start/ptr to
char indexes

Do not set the Expat handlers if it is. Fixes PyXML bug #473195.

'slotdef' structure typedef and 'struct wrapperbase'.  By adding the
wrapper docstrings to the slotdef structure, the slotdefs array can
serve as the data structure that drives add_operators(); the wrapper
descriptor contains a pointer to slotdef structure.  This replaces
lots of custom code from add_operators() by a loop over the slotdefs
array, and does away with all the tab_xxx tables.

also restored SRE Unicode support for 1.6/2.0/2.1