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 log10l = __log10l
+#pragma weak __log10l = log10l
 
 /*
  * log10l(X)
  *
  * Method :