include branch spec in delete confirmation message

Provide the user with slightly more confirmation that they're deleting
the branch they intended. This is useful particularly when cleaning up
stale branches via the Branch Manager.
Add '--date-order' option switch for 'magit-log'
remove dependency to epa

not worth breaking compatibility with emacs < 23 for just a face
Merge commit '5ea87cf'
Merge commit 'daf118f'
Merge branch 'master' into next
Merge branch 'next' into font-lock
autoload forms required for fontification of magit macros

* If magit is already loaded then the keywords are added without the
  user seeing any warnings.
* If magit is only autoloaded then it is loaded and the keywords are
  added without the user seeing any warnings.
  * If magit is autoloaded but not on the load-path the user will see
    (but likely not notice) this error:

,----
| File local-variables error: (file-error "Cannot open load file" "magit")
`----

* If magit is neither loaded nor autoloaded user will see this
  message:

,----
| The local variables list in /path/to/magit.el
| contains values that may not be safe (*).
|
| Do you want to apply it?  You can type
| y  -- to apply the local variables list.
| n  -- to ignore the local variables list.
| !  -- to apply the local variables list, and permanently mark these
|       values (*) as safe (in the future, they will be set automatically.)
|
|     indent-tabs-mode : nil
|     tab-width : 8
|   * eval : (require (quote magit))
|   * eval : (magit-maybe-add-font-lock-keywords)
|
| Please type y, n, or !:
`----

  * If she sais "y" magit is loaded and the keywords are added.
    * Unless magit isn't on the load-path, in which case she gets.

,----
| File local-variables error: (file-error "Cannot open load file" "magit")
`----

  * If she sais "n" magit isn't loaded and the keywords aren't added.
  * If she said "!" in a _previous_ session she won't see the y/n/!
    question (as there are no unsafe local variables) but instead gets.

,----
| File local-variables error: (file-error "Cannot open load file" "magit")
`----