Move NS port toolbar handling to the window

Move NS port toolbar handling to the window

* src/nsmenu.m (free_frame_tool_bar):
(update_frame_tool_bar): Remove wait_for_tool_bar and get the toolbar
from the window.
* src/nsterm.h (EmacsView): Remove toolbar and wait_for_tool_bar.
* src/nsterm.m (ns_update_begin):
([EmacsView windowDidEnterFullScreen]):
([EmacsView windowDidExitFullScreen]): Get the toolbar from the
window, not the view.
([EmacsView dealloc]): Remove toolbar from view.
([EmacsView createToolbar:]): Move method to EmacsWindow.
([EmacsView initFrameFromEmacs:]): Don't create toolbar here any more.
([EmacsView toolbar]): Remove method.
([EmacsWindow initWithEmacsFrame:fullscreen:screen:]): Create toolbar here.
([EmacsWindow createToolbar:]): Moved from EmacsView.
([EmacsWindow dealloc]): Make sure we clean up the toolbar after
closing the window.