diff -r 000000000000 -r 1918ee327afb src/3rdparty/libmng/doc/misc/magic.dif
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/3rdparty/libmng/doc/misc/magic.dif	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,30 @@
+--- magic.orig	Wed Aug 14 16:48:56 2002
++++ magic	Wed Aug 14 16:50:09 2002
+@@ -2544,6 +2544,27 @@
+ >>28	byte		1		interlaced
+ 1	string		PNG		PNG image data, CORRUPTED
+ 
++#MNG
++# 0x8a M N G 0x0d 0x0a 0x1a 0x0a [4-byte pad] 
++# M H D R [4-byte width][4-byte height][4-byte ticks][4-byte layers]
++# [4-byte frame][4-byte time]
++#
++0		string	\x8aMNG		MNG image data,
++>4		belong	!0x0d0a1a0a	CORRUPTED
++>4		belong	0x0d0a1a0a
++>>16	belong	x			%ld x
++>>20	belong	x			%ld
++
++#JNG
++# 0x8b J N G 0x0d 0x0a 0x1a 0x0a [4-byte pad] 
++# J H D R [4-byte width][4-byte height]
++#
++0		string	\x8bJNG		JNG image data,
++>4		belong	!0x0d0a1a0a	CORRUPTED
++>4		belong	0x0d0a1a0a
++>>16	belong	x			%ld x
++>>20	belong	x			%ld
++
+ # GIF
+ 0	string		GIF8		GIF image data
+ >4	string		7a		\b, version 8%s,