Different fix for cursor inheritance and busy cursor/global cursor.
Previous work was not compatible with GTK < 2.18 and did not properly handle some cases
see #15801

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75807 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Signed-off-by: Marian 'VooDooMan' Meravy <vdm113@gmail.com>

Conflicts:
	src/gtk/cursor.cpp
	src/gtk/window.cpp
patched for ICC

Signed-off-by: Marian 'VooDooMan' Meravy <vdm113@gmail.com>