5261 libm should stop using synonyms.h

*** 24,34 ****
  /*
   * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma weak log = __log
  
  /* INDENT OFF */
  /*
   * log(x)
   * Table look-up algorithm with product polynomial approximation.
--- 24,34 ----
  /*
   * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma weak __log = log
  
  /* INDENT OFF */
  /*
   * log(x)
   * Table look-up algorithm with product polynomial approximation.