``unibits/tcl*.c``, ``unibits/unibits.h``, ``win32/regex/regc_locale.c`` and
``win32/regex/regerrs.h`` files were extracted from the Tcl 8.5.3 project
source. The following license and copyright terms apply to these files:

    This software is copyrighted by the Regents of the University of
    California, Sun Microsystems, Inc., Scriptics Corporation, ActiveState
    Corporation and other parties.  The following terms apply to all files
    associated with the software unless explicitly disclaimed in
    individual files.
    
    The authors hereby grant permission to use, copy, modify, distribute,
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    the new terms are clearly indicated on the first page of each file where
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    IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
    FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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    GOVERNMENT USE: If you are acquiring this software on behalf of the
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    in the software and related documentation as defined in the Federal 
    Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2).  If you
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    permission to use and distribute the software in accordance with the
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