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.

These aren't present in the PSDK versions of these files but are
necessary for us to be able to compile Wine with compilers that don't
support anonymous structs and unions.