* Make all parts of the 3D model appear over multiplayer by prepending
"Aircraft/Lockheed1049h" to the path of their XML files. This includes
exterior lights, too.
* Make liveries work again over multiplayer. This also requires the
"Aircraft/Lockheed1049h" prefix, this time in a Nasal snippet
executed on the remote (!) instances of flightgear.
* Models/mesh_lights.ac: Relocate the landing lights to where the landing
lights of Models/mesh_airframe.ac are.
* Pushback: move the truck a little bit more forward so it rotates on
the same axis as the nose gear steering.
* Lockheed1049h.xml (jsbsim aero), Models/Lockheed1049h.xml: make the
nose gear rotate 70 degrees left and right, replicating the pushback
truck, possibly at the expense of realism. The jsbsim value in
particular (20 degrees) was suspicisously low.
