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 scalbl = __scalbl
+#pragma weak __scalbl = scalbl
 
 /*
  * scalbl(x,n): return x * 2^n by manipulating exponent.
  */