libc/uClibc: fix building on system with recent glibc

While trying to build a toolchain with ct-ng 1.5.0,
arm-unknown-linux-uclibcgnueabi target,
I get the following error:

[INFO ] Installing C library headers
[EXTRA] Copying sources to build dir
[EXTRA] Applying configuration
[EXTRA] Building headers
[EXTRA] Installing headers
[ERROR] extra/scripts/unifdef.c:209: error: conflicting types for 'getline'
[ERROR] make[2]: *** [extra/scripts/unifdef] Error 1
[ERROR] Build failed in step 'Installing C library headers'

The following patch solves the problem.
(It's a backport of this uClibc commit:
http://git.uclibc.org/uClibc/commit/?id=49e81cada73616864b9b31df0aeb6961c30f5a6e
)

[--SNIP from another mail--]
AFAIK this is a problem since glibc 2.10.
(transplanted from 1ba79f2126df8bd89120899a58f2d0bcc2e9c771)

--- glibc-2.7/sysdeps/unix/sysv/linux/sh/sysdep.S.orig	2005-12-30 22:16:43.000000000 +0000

+++ glibc-2.7/sysdeps/unix/sysv/linux/sh/sysdep.S	2008-08-19 22:33:14.000000000 +0100

@@ -32,3 +32,13 @@

 #define __syscall_error __syscall_error_1

 #include <sysdeps/unix/sh/sysdep.S>

+

+	.data

+	.align 3

+	.globl ___fpscr_values

+	.type ___fpscr_values, @object

+	.size ___fpscr_values, 8

+___fpscr_values:

+	.long	0

+	.long	0x80000

+weak_alias (___fpscr_values, __fpscr_values)

--- glibc-2.7/sysdeps/unix/sysv/linux/sh/Versions.orig	2003-09-01 05:05:09.000000000 +0100

+++ glibc-2.7/sysdeps/unix/sysv/linux/sh/Versions	2008-08-19 22:33:14.000000000 +0100

@@ -2,6 +2,7 @@

   GLIBC_2.2 {

     # functions used in other libraries

     __xstat64; __fxstat64; __lxstat64;

+    __fpscr_values;

     # a*

     alphasort64;