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 tan = __tan
+#pragma weak __tan = tan
 
 /* INDENT OFF */
 /*
  * tan(x)
  * Table look-up algorithm by K.C. Ng, November, 1989.

@@ -39,11 +39,10 @@
  *      __rem_pio2      ... argument reduction routine
  */
 /* INDENT ON */
 
 #include "libm.h"
-#include "libm_synonyms.h"
 #include "libm_protos.h"
 #include <math.h>
 
 double
 tan(double x) {