(initialization): Change parent group from `internal'

(initialization): Change parent group from `internal'
to `environment'.
(initial-buffer-choice): New variable.
(command-line): Revert 2007-07-02 change that sets
buffer-offer-save in *scratch* and enables auto-save in it.
(fancy-splash-text): Add links to existing items.  Add new items
with links for useful tasks.  Move information about Control-g to
fancy-splash-head.  Move "Emacs Guided Tour" to the end.
(fancy-splash-keymap): New variable.
(fancy-splash-last-input-event): Remove variable.
(fancy-splash-insert): Add processing of `:link' element.
(fancy-splash-head): Replace "Type Control-l to begin editing"
with "Type `q' to exit".
(fancy-splash-screens-1): Let-bind inhibit-read-only to t.
(fancy-splash-default-action, fancy-splash-special-event-action):
Remove functions.
(fancy-splash-quit): New function.
(fancy-splash-screens): Rename input arg from `hide-on-input' to
`static' and reverse the condition of its usage.  Don't preserve
original values of `minor-mode-map-alist',
`emulation-mode-map-alists', `special-event-map'.
Rename startup-buffer from "*About GNU Emacs*" to " GNU Emacs".
Rename about-buffer from " GNU Emacs" to " About GNU Emacs".
Remove processing of special events.  Use local key map
`fancy-splash-keymap'.  Set buffer to read-only.
(normal-splash-screen): Rename input arg from `hide-on-input' to
`static' and reverse the condition of its usage.
Rename startup-buffer from "*About GNU Emacs*" to " GNU Emacs".
Rename about-buffer from " GNU Emacs" to " About GNU Emacs".
Add links to existing items.  Add new items with links for useful
tasks.  Use local key map `fancy-splash-keymap'.
(display-splash-screen): Rename input arg from `hide-on-input' to
`static'.
(about-emacs): Add alias to display-splash-screen.
(command-line-1): Use `initial-buffer-choice'.