Log Message:
Update emacs-snapshot to 24.0.90.20111004.

Notable changes:
* buffer.h (struct buffer): Use time_t, not int, for a time stamp.
  This fixes a Y2038 bug on 64-bit hosts.
* pcmpl-cvs.el (pcmpl-cvs-entries): Update for Emacs 22.1 changes to
  split-string.
* mouse.el (mouse-drag-track): Set scroll-margin to 0 while
  tracking (Bug#9541).
* mail/smtpmail.el (smtpmail-via-smtp): Ignore errors that arise
  when sending QUIT
* emacs-lisp/bytecomp.el (byte-compile-lapcode): Fix overflow check.