Fix GNUStep issues with startup.

Fix GNUStep issues with startup.

* nsterm.h (EmacsApp): Add applicationDidFinishLaunchingCalled.

Pixel resize changes for NS.
* nsterm.m (x_set_window_size): Change parameters rows/cols to
height/width.  row/cols are locals.
Pass pixelwise to check_frame_size.  Don't set FRAME_PIXEL_WIDTH/HEIGHT.
(updateFrameSize:): Remove gsextra.  Adjust for pixelwise resize.
(windowWillResize): Remove gsextra.  Calculate extra as in
updateFrameSize.
(x_new_font): Don't change frame size if fullscreen.  Change
size pixelwise.

* nsterm.m (x_set_window_size): Remove fprintf.
(init): Define always.  Set applicationDidFinishLaunchingCalled
for GNUStep.
(applicationDidFinishLaunching:): Set
applicationDidFinishLaunchingCalled,
(applicationDidBecomeActive:): Call applicationDidFinishLaunching if
not called.