rename chownCgroup to Chown

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
dbus method names: capitalize first letter consistently

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
remove the scm programs

The scm-extended dbus calls are only meant to be used by the
proxy.  If we want separate binaries for them, we can now
write them using the libcgmanager versions to do the dbus
part, then continue over the unix socket which the binaries
must create and pass.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>