Additional notices for enabled wxWidgets core/base code
=======================================================

Source: wxWidgets v3.3.4
https://github.com/wxWidgets/wxWidgets/tree/v3.3.4

The following notices are reproduced from the named upstream files.

Calendar calculations
---------------------
Source: src/common/datetime.cpp and src/common/datetimefmt.cpp

Copyright 1993-1995, Scott E. Lee, all rights reserved.
Permission granted to use, copy, modify, distribute and sell
so long as the above copyright and this permission statement
are retained in all copies.

Scoped pointers
---------------
Source: include/wx/scopedptr.h

(C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
Copyright (c) 2001, 2002 Peter Dimov

Permission to copy, use, modify, sell and distribute this software
is granted provided this copyright notice appears in all copies.
This software is provided "as is" without express or implied
warranty, and with no claim as to its suitability for any purpose.

IEEE floating-point conversion routines
--------------------------------------
Source: src/common/extended.c

Copyright (C) 1989-1991 Ken Turkowski. <turk@computer.org>

All rights reserved.

Warranty Information
Even though I have reviewed this software, I make no warranty
or representation, either express or implied, with respect to this
software, its quality, accuracy, merchantability, or fitness for a
particular purpose.  As a result, this software is provided "as is,"
and you, its user, are assuming the entire risk as to its quality
and accuracy.

This code may be used and freely distributed as long as it includes
this copyright notice and the above warranty information.

Spline drawing
--------------
Source: docs/doxygen/mainpages/copyright.h

XFig2.1 is copyright (c) 1985 by Supoj Sutanthavibul. Permission to
use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided
that the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation, and that the name of M.I.T. not be used in advertising or
publicity pertaining to distribution of the software without specific,
written prior permission.  M.I.T. makes no representations about the
suitability of this software for any purpose.  It is provided 'as is'
without express or implied warranty.
