message.el (message-canlock-generate): Require sha1, not

message.el (message-canlock-generate): Require sha1, not
sha1-el.  (Can we get rid of this require alltogheter? It is ugly
to require within a function.  Sadly, if sha1.el isn't loaded, the
let binding in m-c-g will hide the defcustom definition, which is
bad.)
canlock.el: Require sha1, not sha1-el.
message.el: Don't autoload sha1 (there is a autoload cookie in
sha1.el).
sha1-el.el: Renamed to sha1.el.