[Pharo-dev] libpng fails to download

Hi All, Esteban, I just attempted to build the pharo vm on Win32 and it failed due to: ftp://ftp.simplesystems.org/pub/libpng/png/src/libpng16/libpng-1.6.29.tar.gz not being available. The current version is 1.6.30, which also appears to be unavailable from this address. I successfully downloaded 1.6.29 from: http://prdownloads.sourceforge.net/libpng/libpng-1.6.29.tar.gz?download which is referenced on what appears to be the official web page: http://www.libpng.org/pub/png/libpng.html I plan to test with 1.6.30 tonight. Is there any reason not to submit a PR pointing to sourceforge? Thanks, Alistair