This upgrade fixes the vulnerability: CVE-2016-10087
License file changes are due to updates in Version and Copyright date. ie:
'libpng versions 1.0.7, July 1, 2000, through 1.2.57, December 29, 2016, are
Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson'
Signed-off-by: Maxin B. John <maxin.john@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>