5261 libm should stop using synonyms.h

*** 25,35 ****
  /*
   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma weak cpowl = __cpowl
  
  #include "libm.h"                               /* __k_clog_rl/__k_atan2l */
  /* atan2l/atan2pil/exp2l/expl/fabsl/hypotl/isinfl/logl/powl/sincosl/sincospil */
  #include "complex_wrapper.h"
  #include "longdouble.h" 
--- 25,35 ----
  /*
   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma weak __cpowl = cpowl
  
  #include "libm.h"                               /* __k_clog_rl/__k_atan2l */
  /* atan2l/atan2pil/exp2l/expl/fabsl/hypotl/isinfl/logl/powl/sincosl/sincospil */
  #include "complex_wrapper.h"
  #include "longdouble.h"