* cp-tree.h (DECL_TEMPLATE_INSTANTIATED): New macro.
	* decl.c (duplicate_decls): Remove special-case code to deal with
	template friends, and just do the obvious thing.
	* pt.c (register_specialization): Tweak for clarity, and also to
	clear DECL_INITIAL for an instantiation before it is merged with a
	specialization.
	(check_explicit_specialization): Fix indentation.
	(tsubst_friend_function): Handle both definitions in friend
	declaration and outside friend declarations.
	(tsubst_decl): Don't clear DECL_INITIAL for an instantiation.
	(regenerate_decl_from_template): Tweak accordingly.
	(instantiate_decl): Likewise.

From-SVN: r23674