5261 libm should stop using synonyms.h

@@ -24,11 +24,11 @@
 /*
  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
-#pragma weak powf = __powf
+#pragma weak __powf = powf
 
 #include "libm.h"
 #include "xpg6.h"       /* __xpg6 */
 #define _C99SUSv3_pow   _C99SUSv3_pow_treats_Inf_as_an_even_int