Don't listsync until after the signal handler.
These signals seem to skip the next FINISH, report.
Implement the pause signal a bit better.
Implement sync signal in display lists.

Makes dialogs show up in 3rd Birthday.
Implement the jump, call, and ret signals.

Still buggy, but more things show...
Merge pull request #1192 from unknownbrackets/dlist-parts

Improve displaylist signals