5261 libm should stop using synonyms.h

@@ -25,11 +25,12 @@
 /*
  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
-#pragma weak expm1l = __expm1l
+#pragma weak __expm1l = expm1l
+
 #if !defined(__sparc)
 #error Unsupported architecture
 #endif
 
 /*