(view-emacs-todo): Rename from view-todo.

(view-emacs-todo): Rename from view-todo.
(describe-gnu-project): Rename from describe-project.  Users changed.
(view-help-file): New helper function.
(describe-distribution, describe-copying, describe-gnu-project)
(view-todo, view-order-manuals, view-emacs-problems): Use it.
(view-emacs-debugging, view-external-packages): New commands.
(help-map): Move describe-distribution to C-h C-o (ordering).
Move view-emacs-problems to C-h C-p (problems).
Bind view-emacs-debugging to C-h C-d (debugging).
Bind view-external-packages to C-h C-e (extras).
(help-for-help-internal): Cleanup and align descriptions.
Remove command names to reduce clutter.