symlinks to all of them.
this fixes kde/multimedia, which builds a libmpeg-0.3.0.so (using -release),
also known as libmpeg.so, and then links something with -lmpeg ...
(before this commit, we only had a symlink to the former)
it should really just use libmpeg.la instead, but let's have libtool handle
such attempts anyway.
might fix other stuff i'm not yet aware of, too.