CellArea: Fix documentation of typedef SlotForeachAlloc

* gtk/src/cellarea.hg: SlotForeachAlloc: An extra '>' in the docs trapped
doxygen 1.8.4 in an infinite loop.
Gtk::Action, Activatable: Undeprecate methods that don't use a StockID

* gtk/src/action.[hg|ccg]:
* gtk/src/activatable.hg: Undeprecate all methods, signals and properties
that don't use a StockID.
* gtk/src/filelist.am: Move undeprecated classes back from
gtkmm_files_deprecated_hg to gtkmm_files_any_hg.

This was forgotten when deprecations were reverted in commit
https://git.gnome.org/browse/gtkmm/commit/?id=caf1165105d078a2cdc92caa14a1ebfc6724e6ef
Gtk::ToggleAction: Deprecate the create() that uses (deprecated) StockID

* gtk/src/toggleaction.[hg|ccg]: Deprecate the create() that uses StockID.
This should not be an API break because you could not use this deprecated
method if you had disabled deprecated API, because it takes a deprecated
type as parameter.