Change initial-frame-alist and default-frame-alist defaults (Bug#2249).

Change initial-frame-alist and default-frame-alist defaults (Bug#2249).
Since the menu-bar and tool-bar are now unconditionally turned on by
default, we can let the defcustom defaults reflect that.

* frame.el (initial-frame-alist): Give default value entries for
menu-bar-lines and tool-bar-lines consistent with the startup
default (Bug#2249).

* frame.c (Vdefault_frame_alist): Give default value entries for
menu-bar-lines and tool-bar-lines consistent with the startup
default (Bug#2249).