* Add Win32 progress callback reporting support git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18355 a1c6a512-1295-4272-9138-f99709370657
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17939 a1c6a512-1295-4272-9138-f99709370657
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17934 a1c6a512-1295-4272-9138-f99709370657