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/* Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2004, 2006, 2008-2010
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/* Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2004, 2006, 2008-2013
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Free Software Foundation, Inc.
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Based on strlen implementation by Torbjorn Granlund (tege@sics.se),