Re: PR27311, ld.bfd (symbol from plugin): undefined reference

This does exactly the same as making decisions based on an override
in _bfd_elf_add_default_symbol, and is simpler.

	PR 27311
	* elflink.c (_bfd_elf_add_default_symbol): Revert last two changes.
	(elf_link_add_object_symbols): Here too.  Don't pull in as-needed
	libraries when H is an indirect symbol after calling
	_bfd_elf_add_default_symbol.