Clean up eglCreateWindowSurface quirks
The following discussion from !274 (merged) should be addressed:
Ever so slightly related: I'd fold the two window_for*, pushing the
Window *quirk just before the
Speaking of which we might add the quirk in
weston_platform_create_egl_surface()and reuse the helper across the board. At some point we could add support for EGL 1.5
eglCreatePlatformWindowSurface- note the
attribstype has changed.
^^ some tasks for a rainy day. Feel free to add them to weston's newcomers TODO list.