Allow the same eglSurface and eglWindow accessed by two threads without any sync as in HelloWorldX.

Allow eglSurfaces  and wl_egl_window  by two threads without any sync as in HelloWorldX.

the api trace:
[  5249] EGL(tid=0x76fbc5c0): eglDestroySurface 0x11b5c10 0x154f870
.
[  5286] (tid=0x63aff2d0, gc=0x12d6708): glDrawElements 0x0005 4 0x1403 0x2
[  5289] EGL(tid=0x63aff2d0): eglSwapBuffers 0x11b5c10 (nil), Frame Number = 68
one thread is doing eglDestroySurface, , wl_surface_destroy and wl_egl_window_destroy() while another thread still doing rendering and eglSwapBuffers, 
There is race condition, wl_egl_window_destroy() will delete wl_surfac, free wayland egl_window and trigger destory wl_window callback, thread enter eglSwapBuffer, there is segmentation for null wayland interface.
I will attach the application HelloWorldX in the ticket.  The application runs on imx6q.
If run long time,  you will see the segmentation fault.

To reproduce the issue:

1. untar attached package and copy everything to target board including .qml directory.
2. ./HelloWorldX,  untill it crashes.