message: consistently use VTable over Vtable (matching stable stdlib API RawWakerVTable)
diff: @@ -197,7 +197,7 @@ pub(crate) fn codegen_const_value<'tcx>(
  let (alloc_id, offset) = ptr.into_parts(); // we know the `offset` is relative
  // For vtables, get the underlying data allocation.
  let alloc_id = match fx.tcx.global_alloc(alloc_id) {
  - GlobalAlloc::Vtable(ty, trait_ref) => fx.tcx.vtable_allocation((ty, trait_ref)),
  + GlobalAlloc::VTable(ty, trait_ref) => fx.tcx.vtable_allocation((ty, trait_ref)),
  _ => alloc_id,
  };
  let base_addr = match fx.tcx.global_alloc(alloc_id) {
  @@ -221,7 +221,7 @@ pub(crate) fn codegen_const_value<'tcx>(
  fx.module.declare_func_in_func(func_id, &mut fx.bcx.func);
  fx.bcx.ins().func_addr(fx.pointer_type, local_func_id)
  }
  - GlobalAlloc::Vtable(..) => bug!("vtables are already handled"),
  + GlobalAlloc::VTable(..) => bug!("vtables are already handled"),
  GlobalAlloc::Static(def_id) => {
  assert!(fx.tcx.is_static(def_id));
  let data_id = data_id_for_static(fx.tcx, fx.module, def_id, false);
  @@ -364,7 +364,7 @@ fn define_all_allocs(tcx: TyCtxt<'_>, module: &mut dyn Module, cx: &mut Constant
  //println!("alloc_id {}", alloc_id);
  let alloc = match tcx.global_alloc(alloc_id) {
  GlobalAlloc::Memory(alloc) => alloc,
  - GlobalAlloc::Function(_) | GlobalAlloc::Static(_) | GlobalAlloc::Vtable(..) => {
  + GlobalAlloc::Function(_) | GlobalAlloc::Static(_) | GlobalAlloc::VTable(..) => {
  unreachable!()
  }
  };
  @@ -442,7 +442,7 @@ fn define_all_allocs(tcx: TyCtxt<'_>, module: &mut dyn Module, cx: &mut Constant
  GlobalAlloc::Memory(target_alloc) => {
  data_id_for_alloc_id(cx, module, alloc_id, target_alloc.inner().mutability)
  }
  - GlobalAlloc::Vtable(ty, trait_ref) => {
  + GlobalAlloc::VTable(ty, trait_ref) => {
  let alloc_id = tcx.vtable_allocation((ty, trait_ref));
  data_id_for_alloc_id(cx, module, alloc_id, Mutability::Not)
  }
  