follow up skip last

[krakjoe]

@nikic very unsure if this is right, is it ?

[nikic]

I expect this may not handle the skip_frame/fake_frame right. I think a way to test is from inside an error handler on include() failure, where there should be a fake include() frame.

I think correctly handling all the edge cases may not be simple.

[krakjoe]

Bravely, backing out ...