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 scalbln = __scalbln
+#pragma weak __scalbln = scalbln
 
 #include "libm.h"
 #include <float.h>              /* DBL_MAX, DBL_MIN */
 
 static const double twom54 = 5.5511151231257827021181583404541015625e-17;