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 ctanhf = __ctanhf
+#pragma weak __ctanhf = ctanhf
 
 #include "libm.h"               /* expf/expm1f/fabsf/sincosf/sinf/tanhf */
 #include "complex_wrapper.h"
 
 /* INDENT OFF */