shell32: Check CPL_NEWINQUIRE message in control panel applets if we can't retrieve valid strings/icon.

The main reason for this change is crappy performance for reconfiguring FBOs.

Integrate clearing the depth stencil attachment in context_attach_depth_stencil_fbo().

Integrate clearing the attachment in context_attach_surface_fbo().

wined3d: Handle drawbuffers in context_apply_fbo_state() instead of context_set_render_target_fbo().

widl: Don't automatically add DUMMYUNIONNAME and DUMMYSTRUCTNAME names to anonymous unions and structs.

It doesn't match what MIDL does.