Rename some functions and move some hooks.

Rename some functions and move some hooks.

* org.el (org-font-lock-hook, org-set-font-lock-defaults): Add
a docstring.
(org-display-inline-remove-overlay): Rename from
`org-display-inline-modification-hook'.
(org-speed-command-activate): Rename from
`org-speed-command-default-hook'.
(org-babel-speed-command-hook): Rename from
`org-babel-speed-command-activate'.

* org-agenda.el (org-agenda-update-agenda-type): Rename from
`org-agenda-post-command-hook'.
(org-agenda-mode): Use the new name.
(org-agenda-post-command-hook): Define as obsolete function.

* org-lparse.el (org-lparse): Temporarily activate the hooks
needed for the ODT conversion.
(org-lparse-preprocess-after-blockquote): Rename from
`org-lparse-preprocess-after-blockquote-hook'.
(org-lparse-strip-experimental-blocks-maybe): Rename from
`org-lparse-strip-experimental-blocks-maybe'.
(org-lparse-preprocess-after-blockquote-hook)
(org-lparse-strip-experimental-blocks-maybe-hook): Define as
obsolete functions.