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 cexpl = __cexpl
+#pragma weak __cexpl = cexpl
 
 #include "libm.h"               /* expl/isinfl/iszerol/scalbnl/sincosl */
 #include "complex_wrapper.h"
 
 extern int isinfl(long double);