5261 libm should stop using synonyms.h

@@ -25,11 +25,11 @@
 /*
  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
-#pragma weak expm1 = __expm1
+#pragma weak __expm1 = expm1
 
 /* INDENT OFF */
 /*
  * expm1(x)
  * Returns exp(x)-1, the exponential of x minus 1.

@@ -125,11 +125,10 @@
  * compiler will convert from decimal to binary accurately enough
  * to produce the hexadecimal values shown.
  */
 /* INDENT ON */
 
-#include "libm_synonyms.h"      /* __expm1 */
 #include "libm_macros.h"
 #include <math.h>
 
 static const double xxx[] = {
 /* one */                1.0,