EMI: Allow movie skipping in the PS2-version.

Catch the ESC-key event manually for the PS2 version,
to allow skipping movies. (This also eats up the ESC-key event,
to avoid passing it on to lua afterwards).
EMI: Avoid updating lua while playing movies in the PS2-version.

Otherwise the scripts that start after a movie start prematurely, in the
case of the dock intro, this means that the dialogue on the docks starts
playing at the same time as the arrival video starts playing. With this
fix we avoid that issue, resuming operation as normal only when the movie
is finished.
Merge pull request #771 from somaen/fixPS2movies

RFC: EMI: Fix ps2movies