Fix localealias.c fgets_unlocked namespace (bug 17589).

intl/localealias.c is brought in by ISO C functions, but uses
fgets_unlocked, which is not an ISO C function.  This patch changes
this to use __fgets_unlocked.

Tested for x86_64 (testsuite, and that stripped installed shared
libraries are unchanged by the patch).

	[BZ #17589]
	* intl/localealias.c [_LIBC] (FGETS): Use __fgets_unlocked instead
	of fgets_unlocked.

ChangeLog

@@ -1,5 +1,9 @@
 2014-11-12  Joseph Myers  <joseph@codesourcery.com>
 
+	[BZ #17589]
+	* intl/localealias.c [_LIBC] (FGETS): Use __fgets_unlocked instead
+	of fgets_unlocked.
+
 	[BZ #17585]
 	* string/memmem.c [!_LIBC] (__memmem): Define to memmem.
 	(memmem): Rename to __memmem and define as weak alias of

NEWS

@@ -11,7 +11,8 @@ Version 2.21
 
   6652, 12926, 14132, 14138, 14171, 15215, 15884, 17266, 17344, 17363,
   17370, 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522,
-  17555, 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585.
+  17555, 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585,
+  17589.
 
 * New locales: tu_IN, bh_IN.
 

intl/localealias.c

@@ -84,7 +84,7 @@ __libc_lock_define_initialized (static, lock);
 /* Some optimizations for glibc.  */
 #ifdef _LIBC
 # define FEOF(fp)		feof_unlocked (fp)
-# define FGETS(buf, n, fp)	fgets_unlocked (buf, n, fp)
+# define FGETS(buf, n, fp)	__fgets_unlocked (buf, n, fp)
 #else
 # define FEOF(fp)		feof (fp)
 # define FGETS(buf, n, fp)	fgets (buf, n, fp)