[libpng16] Imported from libpng-1.6.32beta09.tar

ANNOUNCE

@@ -67,7 +67,8 @@ Version 1.6.32beta08 [August 3, 2017]
 Version 1.6.32beta09 [August 3, 2017]
   Require cmake-2.8.8 in CMakeLists.txt. Revised symlink creation,
     no longer using deprecated cmake LOCATION feature (Clifford Yapp).
-
+  Fixed five-byte error in the calculation of IDAT maximum possible size.
+  
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement

CHANGES

@@ -5950,6 +5950,7 @@ Version 1.6.32beta08 [August 3, 2017]
 Version 1.6.32beta09 [August 3, 2017]
   Require cmake-2.8.8 in CMakeLists.txt. Revised symlink creation,
     no longer using deprecated cmake LOCATION feature (Clifford Yapp).
+  Fixed five-byte error in the calculation of IDAT maximum possible size.
   
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

png.c

 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.6.31 [July 27, 2017]
+ * Last changed in libpng 1.6.32 [(PENDING RELEASE)]
  * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)

tests/pngtest

 #!/bin/sh
 ./pngtest --relaxed ${srcdir}/tests/badcrc.png
 ./pngtest --relaxed ${srcdir}/tests/badadler.png
+./pngtest --relaxed ${srcdir}/tests/huge_idat.png
 exec ./pngtest --strict ${srcdir}/pngtest.png