Move the ‘declare’ form before the interactive spec in 10 functions.

Move the ‘declare’ form before the interactive spec in 10 functions.

* lisp/emacs-lisp/package.el (package-menu-hide-package):
* lisp/font-lock.el (font-lock-debug-fontify):
* lisp/image.el (image-jpeg-p):
* lisp/mail/flow-fill.el (fill-flowed-test):
* lisp/mh-e/mh-speed.el (mh-speed-toggle, mh-speed-view):
* lisp/progmodes/project.el (project-async-shell-command)
(project-shell-command, project-compile):
* lisp/progmodes/sh-script.el (sh-assignment):
Fix special forms to follow in this order: docstring, declare, interactive.