linux-3.0: upgrade to 3.0.71
linux-3.4: upgrade to 3.4.38
linux-3.8: upgrade to 3.8.5
linux-3.9: upgrade to 3.9-rc4
e17/e_dbus: make sure depending packages can find (propagated) dbus
e17/emotion: enable vlc video backend

we should probably make this configurable, but for now enabling (and
testing) at least 1 backend is better than none, as emotion without
backends won't anything at all
e17/ethumb: add optional dependency on e_dbus

ethumb_client depends on it, but will fail (skip on installation)
silently when not found
e17/ethumb: support video thumbnails and exif
add terminology: e17 terminal emulator