5261 libm should stop using synonyms.h

@@ -25,12 +25,12 @@
 /*
  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
-#pragma weak jn = __jn
-#pragma weak yn = __yn
+#pragma weak __jn = jn
+#pragma weak __yn = yn
 
 /*
  * floating point Bessel's function of the 1st and 2nd kind
  * of order n: jn(n,x),yn(n,x);
  *