Rename CustomAttrTypeKind::PropertyDelegate to PropertyWrapper.

Author: DougGregor

include/swift/AST/TypeCheckRequests.h

@@ -2693,9 +2693,9 @@ enum class CustomAttrTypeKind {
   /// any contextual type parameters.
   NonGeneric,
 
-  /// Property delegates have some funky rules, like allowing
+  /// Property wrappers have some funky rules, like allowing
   /// unbound generic types.
-  PropertyDelegate,
+  PropertyWrapper,
 
   /// Global actors are represented as custom type attributes. They don't
   /// have any particularly interesting semantics.

lib/AST/TypeCheckRequests.cpp

@@ -1427,8 +1427,8 @@ void swift::simple_display(llvm::raw_ostream &out, CustomAttrTypeKind value) {
     out << "non-generic";
     return;
 
-  case CustomAttrTypeKind::PropertyDelegate:
-    out << "property-delegate";
+  case CustomAttrTypeKind::PropertyWrapper:
+    out << "property-wrapper";
     return;
 
   case CustomAttrTypeKind::GlobalActor:

lib/Sema/TypeCheckPropertyWrapper.cpp

@@ -513,7 +513,7 @@ Type AttachedPropertyWrapperTypeRequest::evaluate(Evaluator &evaluator,
   auto ty = evaluateOrDefault(
       evaluator,
       CustomAttrTypeRequest{customAttr, var->getDeclContext(),
-                            CustomAttrTypeKind::PropertyDelegate},
+                            CustomAttrTypeKind::PropertyWrapper},
       Type());
   if (!ty || ty->hasError()) {
     return ErrorType::get(var->getASTContext());

lib/Sema/TypeCheckType.cpp

@@ -3974,7 +3974,7 @@ Type CustomAttrTypeRequest::evaluate(Evaluator &eval, CustomAttr *attr,
 
   OpenUnboundGenericTypeFn unboundTyOpener = nullptr;
   // Property delegates allow their type to be an unbound generic.
-  if (typeKind == CustomAttrTypeKind::PropertyDelegate) {
+  if (typeKind == CustomAttrTypeKind::PropertyWrapper) {
     unboundTyOpener = [](auto unboundTy) {
       // FIXME: Don't let unbound generic types
       // escape type resolution. For now, just