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 acos = __acos
+#pragma weak __acos = acos
 
 /* INDENT OFF */
 /*
  * acos(x)
  * Method :

@@ -54,11 +54,10 @@
  *
  * Function needed: sqrt
  */
 /* INDENT ON */
 
-#include "libm_synonyms.h"      /* __acos, __sqrt, __isnan */
 #include "libm_protos.h"        /* _SVID_libm_error */
 #include "libm_macros.h"
 #include <math.h>
 
 /* INDENT OFF */