Distribute all VAPI files.
Distribute all VAPI files.

This also fixes the `make distcheck`.

svn path=/trunk/; revision=635

jku/rygel,jku/rygel,Tarnyko/rygel,GNOME/rygel,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,Pelagicore/Media-Manager-Rygel-patched,luisbg/rygel,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,Tarnyko/rygel