Explain the regenerate patch.

debian/patches/0007-regenerate-muse-autoloads-el.patch

 Description: regenerate lisp/muse-autoloads.el
+ The lisp/muse-autoloads.el file gets regenerated during build, which breaks the
+ build-twice-in-a-row requirement.  This patch records the regenerated contents
+ so that the file stays the same when building multiple times in a row.
 Author: Xiyue Deng <manphiz@gmail.com>
 Bug-Debian: https://bugs.debian.org/1048114
 Forwarded: not-needed