New repo for libpng-1.5.5.tar.gz

Old one is broken

magick-installer.sh

@@ -16,7 +16,7 @@ cd magick-installer
 
 download http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.13.1.tar.gz
 download http://nongnu.askapache.com/freetype/freetype-2.4.3.tar.gz
-download ftp://ftp.simplesystems.org/pub/libpng/png/src/libpng-1.5.5.tar.gz
+download http://sourceforge.net/projects/libpng/files/libpng15/older-releases/1.5.5/libpng-1.5.5.tar.gz
 download http://www.imagemagick.org/download/delegates/jpegsrc.v8b.tar.gz
 download http://download.osgeo.org/libtiff/tiff-3.9.4.tar.gz
 download http://voxel.dl.sourceforge.net/project/wvware/libwmf/0.2.8.4/libwmf-0.2.8.4.tar.gz