#89 Beta2 Breaks ifogen compatability

[Ken Mandelberg]

In 0.5 Beta 1 the mpg file generated by the DVD option
in tyeditor (presumably mplex -f8) was compatible
with Dvdauthor-0.50/ifogen on Linux. Starting in Beta2
this compatibilty was broken, with dvdauthor
complaining with continuous

WARN: Skipping sector, waiting for first VOBU...
WARN: Skipping sector, waiting for first VOBU...
WARN: Skipping sector, waiting for first VOBU...
WARN: Skipping sector, waiting for first VOBU...

and no output.

I've veriied that the same probelm continues in the current
CVS for beta3.