[PATCH 3/3] Add wcsmbs IFUNC tests

[Roland McGrath]

> 	* wcsmbs/Makefile (ifunc-tests): New macro.
> 	(tests-ifunc): Likewise.

They're called variables in GNU makefiles.

> +ifunc-tests = $(addprefix test-,$(strop-tests))
> +tests-ifunc = $(addsuffix -ifunc,$(ifunc-tests))

Having these two variables with such similar names is confusing.
ifunc-tests isn't any use at all.  Just do:

tests-ifunc := $(strop-tests:%=test-%-ifunc)