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 tanl = __tanl
  
  /* INDENT OFF */
  /* cosl(x)
   * Table look-up algorithm by K.C. Ng, November, 1989.
   *
--- 25,35 ----
  /*
   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma weak __tanl = tanl
  
  /* INDENT OFF */
  /* cosl(x)
   * Table look-up algorithm by K.C. Ng, November, 1989.
   *
*** 60,70 ****
   *      computer TRIG(x) returns trig(x) nearly rounded.
   */
  /* INDENT ON */
  
  #include "libm.h"
- #include "libm_synonyms.h"
  #include "longdouble.h"
  
  #include <sys/isa_defs.h>
  
  long double
--- 60,69 ----