Fix NS frame resizing issues (bug#40200, bug#28872)

Fix NS frame resizing issues (bug#40200, bug#28872)

* src/nsmenu.m (update_frame_tool_bar): Remove reference to
updateFrameSize.
* src/nsterm.h: ([EmacsView updateFrameSize]):
([EmacsView setRows:andColumns:]): Remove unused
method definitions.
(NS_PARENT_WINDOW_LEFT_POS):
(NS_PARENT_WINDOW_TOP_POS): Move to nsterm.m.
* src/nsterm.m (ns_parent_window_rect): New function.
(NS_PARENT_WINDOW_LEFT_POS):
(NS_PARENT_WINDOW_TOP_POS): Move to nsterm.m and simplify.
(ns_set_offset): Fix strange behaviours when using negative values.
(ns_set_window_size):
(ns_set_undecorated):
([EmacsView windowDidResize:]):
([EmacsView windowDidExitFullScreen]):
(ns_judge_scroll_bars): Remove references to updateFrameSize.
([EmacsView dealloc]): Unset resize notification and release buffer.
([EmacsView updateFrameSize:]): Remove function.
([EmacsView windowWillResize:toSize:]): Move some code to
viewDidResize.
([EmacsView viewDidResize]): New function.
([EmacsView initFrameFromEmacs:]): Set up resize notification and move
buffer creation until after the prerequisite objects are created.
([EmacsView toggleFullScreen:]): Set frame to the size of the
contentview, not the whole window, and remove reference to
updateFrameSize.
([EmacsView setRows:andColumns:]): Remove unused method.
([EmacsView windowDidMove:]): Tidy up.