Log Message:
Update emacs-snapshot to 20110224.

Changes:
* emacs-lisp/package.el (package-tar-file-info): Handle also
  remote files.
* cus-start.el (cursor-in-non-selected-windows):
  Fix :set quoting oddness.
* font-lock.el (lisp-font-lock-keywords-1): Don't highlight `)'
  in some setf expressions.
* vc/vc.el (vc-next-action): Add missing space to y-or-n-p prompt.
  Give an explicit error if failed to make writable.
* Documentation fixes.