[SECURITY] [DLA 343-1] libpng security update

Package : libpng Version : 1.2.44-1+squeeze5 CVE ID : CVE-2012-3425 CVE-2015-7981 CVE-2015-8126 CVE-2015-7981 Added a safety check in pngsettIME Bug report from Qixue Xiao. CVE-2015-8126 Multiple buffer overflows in the 1 pngsetPLTE and 2 pnggetPLTE functions in libpng before 1.0.64, 1.1.x and...