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 expm1 = __expm1
  
  /* INDENT OFF */
  /*
   * expm1(x)
   * Returns exp(x)-1, the exponential of x minus 1.
--- 25,35 ----
  /*
   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma weak __expm1 = expm1
  
  /* INDENT OFF */
  /*
   * expm1(x)
   * Returns exp(x)-1, the exponential of x minus 1.
*** 125,135 ****
   * compiler will convert from decimal to binary accurately enough
   * to produce the hexadecimal values shown.
   */
  /* INDENT ON */
  
- #include "libm_synonyms.h"      /* __expm1 */
  #include "libm_macros.h"
  #include <math.h>
  
  static const double xxx[] = {
  /* one */                1.0,
--- 125,134 ----