[PATCH] update graphics/png to 1.2.31

[Rumko <rumcic%gmail.com@localhost>]

<posted & mailed>

Attached is the patch which can be applied to pkgsrc.
There was an announcement about the new version on the png-devel ML by Glenn
Randers-Pehrson:

Glenn Randers-Pehrson wrote:
> libpng-1.0.39 and libpng-1.2.31 are available from
> ftp://ftp.simplesystems.org/pub/png/src/
> and from
> http://libpng.sf.net
> 
> This fixes a new bug, introduced in 1.2.30, with
> reading the cHRM chunk.  The png_flush() behavior
> is reverted to libpng-1.2.29 behavior.
> 
> Glenn

Index: Makefile
===================================================================
RCS file: /cvsroot/pkgsrc/graphics/png/Makefile,v
retrieving revision 1.105
diff -u -r1.105 Makefile
--- Makefile    16 Aug 2008 18:53:07 -0000      1.105
+++ Makefile    21 Aug 2008 18:48:42 -0000
@@ -1,6 +1,6 @@
 # $NetBSD: Makefile,v 1.105 2008/08/16 18:53:07 wiz Exp $
 
-DISTNAME=      libpng-1.2.30
+DISTNAME=      libpng-1.2.31
 PKGNAME=       ${DISTNAME:S/lib//}
 CATEGORIES=    graphics
 MASTER_SITES=  ${MASTER_SITE_SOURCEFORGE:=libpng/} \
Index: distinfo
===================================================================
RCS file: /cvsroot/pkgsrc/graphics/png/distinfo,v
retrieving revision 1.49
diff -u -r1.49 distinfo
--- distinfo    16 Aug 2008 18:53:07 -0000      1.49
+++ distinfo    21 Aug 2008 18:48:42 -0000
@@ -1,8 +1,8 @@
-$NetBSD: distinfo,v 1.49 2008/08/16 18:53:07 wiz Exp $
+$NetBSD$
 
-SHA1 (libpng-1.2.30.tar.bz2) = ef9988fd41a0dd0ed8373782a71a475ca5f5b870
-RMD160 (libpng-1.2.30.tar.bz2) = 204a2c492acae63a4ca96982ed269a8f811ef990
-Size (libpng-1.2.30.tar.bz2) = 646461 bytes
+SHA1 (libpng-1.2.31.tar.bz2) = 4d9ebda6d1bc2876fb8234600a8d541fc00e5680
+RMD160 (libpng-1.2.31.tar.bz2) = 9f9b8943dde1472d94b2a905c831f70797f0fb64
+Size (libpng-1.2.31.tar.bz2) = 625715 bytes
 SHA1 (patch-aa) = 27df7893fc54f7e87790850eb9f047155c73f7d3
 SHA1 (patch-ac) = aaafc963c85b72e37fbbeed3e76f0c2ce9ebe9b2
 SHA1 (patch-ae) = 8c06a09817d414ffffbfd39bdd7d1f4336538bf3