[MediaXW-Devel] Updated Download Helper Scripts

[Ingo R. B. <ing...@gm...>]

I updated the download helper scripts to version 0.0.10. Now also the sources
for the bzip2, zlib, jpeg and mng libraries are downloaded. Only the first is
currently used for the installer update wizard. The latter are required for the
next changes and will be used for the new mng-ogg streams.