Log Message:
Update emacs-snapshot to 24.0.91.20111104.

Changes:
- Use `force-same-window' interactively.
- vc-bzr.el: Accept status with more than 9 shelves.
- Add isearch-scroll property to split-window-below and
  split-window-right.
- Amend the handling of c-beginning/end-of-defun in nested declaration
  scopes.