* include/bits/valarray_meta.h: Remove, split into ...
	* include/bits/valarray_before.h: ... this, and ...
	* include/bits/valarray_after.h: ... this.
	* include/std/std_valarray.h: Adjust.
	* include/Makefile.am (bits_headers): Adjust.
	* include/Makefile.in: Regenerate.

From-SVN: r61706