5261 libm should stop using synonyms.h

@@ -24,13 +24,12 @@
 /*
  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
-#pragma weak carg = __carg
+#pragma weak __carg = carg
 
-#include "libm_synonyms.h"
 #include <math.h>               /* atan2 */
 #include "complex_wrapper.h"
 
 static const double
         pi      = 3.14159265358979311600e+00,