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 sincos = __sincos
+#pragma weak __sincos = sincos
 
 /* INDENT OFF */
 /*
  * sincos(x,s,c)
  * Accurate Table look-up algorithm by K.C. Ng, 2000.