math build regression

[David Miller]

From: David Miller <davem@davemloft.net>
Date: Fri, 09 Mar 2012 13:18:24 -0800 (PST)

> In file included from ../libio/libioP.h:38:0,
>                  from gconv_conf.c:92:
> ../sysdeps/ieee754/ldbl-opt/math_ldbl_opt.h:40:27: fatal error: math_private.h: No such file or directory

My interpretation is that Richard's changes make it such that every
arch must now supply a math_private.h file.

No such requirement existed previously, and sparc has never had one.