When in fullscreen mode, `[screen visibleFrame]' sometimes
includes, sometimes excludes the menu bar. This could cause
a frame to be placed too low when in fullscreen mode.
* src/nsterm.m (ns_menu_bar_should_be_hidden): Trace.
(constrain_frame_rect): New parameter, isFullscreen, when true don't
query the height of the menu bar.
(ns_constrain_all_frames): Pass `false' (isFullscreen) to
`constrain_frame_rect'.
([EmacsView initFrameFromEmacs:]): Trace.
([EmacsView isFullscreen]): Trace.
([EmacsWindow constrainFrameRect:toScreen:]): Pass fullscreen
state to `constrain_frame_rect'.