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 hypotl = __hypotl
+#pragma weak __hypotl = hypotl
 
 /*
  * long double hypotl(long double x, long double y);
  * Method :
  *      If z=x*x+y*y has error less than sqrt(2)/2 ulp than sqrt(z) has