This fixes a bug in sequencer cut tool:
* if you cut two strips of the same name class (MVI_XXXX.MOV and MVI_XXXX.001)
the two new generated strips will end up with the same name.
(easy test case: add a MOV file with it's accompanying audio track to the
timeline and then cut both strips at once into two pieces)
* visible problem: your animation data will get messed up on the way, since
the animation system doesn't know, which strip it should assign the
animation.
Problem was caused by generating a new list of sequences within the
cut_seq_list() function:
Since dupli_seq() can't see the members of the new list of sequences, it
won't be able to assign unique names in all cases.
aefa6261c3