[gimp] builld/win: Upgrade libpng to 1.6.17

[Michael Henning <mhenning src gnome org>]

commit 51daad2bfc6373850e73a69388b441c424a9292f
Author: Michael Henning <drawoc darkrefraction com>
Date:   Sun Apr 12 20:06:59 2015 -0400

    builld/win: Upgrade libpng to 1.6.17

 build/windows/jhbuild/imglibs.moduleset |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/build/windows/jhbuild/imglibs.moduleset b/build/windows/jhbuild/imglibs.moduleset
index b2b56ec..ae1906b 100644
--- a/build/windows/jhbuild/imglibs.moduleset
+++ b/build/windows/jhbuild/imglibs.moduleset
@@ -5,6 +5,8 @@
                href="http://download.osgeo.org/"; />
        <repository type="tarball" name="sf.net"
                href="http://downloads.sourceforge.net/project/"; />
+       <repository type="tarball" name="download.sourceforge.net"
+               href="http://download.sourceforge.net/"; />
        <repository type="tarball" name="webp"
                href="https://webp.googlecode.com/files/"; />
 
@@ -21,9 +23,9 @@
 </autotools>
 
 <autotools id="libpng" autogen-sh="configure">
-       <branch version="1.6.15" repo="sf.net"
-                       module="libpng/libpng16/1.6.15/libpng-1.6.15.tar.xz"
-                       hash="sha1:bddeac8ca97fbcf54d6d32c6eefed5d94b49df88">
+       <branch version="1.6.17" repo="download.sourceforge.net"
+                       module="libpng/libpng-1.6.17.tar.xz"
+                       hash="md5:430a9b76b78533235cd4b9b26ce75c7e">
        </branch>
        <dependencies>
                <dep package="zlib"/>