* callint.c (Fcall_interactively): For '^' just delegate the work to

* callint.c (Fcall_interactively): For '^' just delegate the work to
handle-shift-selection.
(syms_of_callint): Move declaration of shift-select-mode to simple.el.
* simple.el (shift-select-mode): Move declaration from callint.c.
(handle-shift-selection): Remove `deactivate' arg and check
shift-select-mode instead.