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 lround = __lround
+#pragma weak __lround = lround
 
 /*
  * lround(x) rounds its argument to the nearest integer, rounding ties
  * away from zero, and converts the result to a 32 bit signed integer.
  *