Unify specfiles names, other specs should be added as vlc.%name.spec

diff --git a/vlc.spec.alt b/vlc.altlinux.spec
similarity index 100%
rename from vlc.spec.alt
rename to vlc.altlinux.spec

diff --git a/vlc.spec b/vlc.fedora.spec
similarity index 100%
rename from vlc.spec
rename to vlc.fedora.spec

diff --git a/vlc.spec.mdk b/vlc.mandriva.spec
similarity index 100%
rename from vlc.spec.mdk
rename to vlc.mandriva.spec