d: Merge upstream dmd, druntime 603225372b

d: Merge upstream dmd, druntime 603225372b

D front-end changes:

	- Import dmd v2.111.0-beta.1.
	- Added placement `new' expressions.

D runtime changes:

	- Import druntime v2.111.0-beta.1.

gcc/d/ChangeLog:

	* dmd/MERGE: Merge upstream dmd 603225372b.
	* dmd/VERSION: Bump version to v2.111.0-beta.1.
	* d-builtins.cc (build_frontend_type): Update for new front-end
	interface.
	* decl.cc (Class DeclVisitor): Likewise.
	(maybe_build_decl_tree): Likewise.
	(get_vtable_decl): Likewise.
	(layout_class_initializer): Likewise.
	* expr.cc (class ExprVisitor): Likewise.
	(ExprVisitor::visit (NewExp *)): Implement placement new for class,
	struct, and pointer types.
	* modules.cc (get_internal_fn): Update for new front-end interface.

libphobos/ChangeLog:

	* libdruntime/MERGE: Merge upstream druntime 603225372b.