5261 libm should stop using synonyms.h

*** 25,41 ****
  /*
   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma weak fex_get_log = __fex_get_log
! #pragma weak fex_set_log = __fex_set_log
! #pragma weak fex_get_log_depth = __fex_get_log_depth
! #pragma weak fex_set_log_depth = __fex_set_log_depth
! #pragma weak fex_log_entry = __fex_log_entry
  
- #include "fenv_synonyms.h"
  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <string.h>
  #include <signal.h>
--- 25,40 ----
  /*
   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma weak __fex_get_log = fex_get_log
! #pragma weak __fex_set_log = fex_set_log
! #pragma weak __fex_get_log_depth = fex_get_log_depth
! #pragma weak __fex_set_log_depth = fex_set_log_depth
! #pragma weak __fex_log_entry = fex_log_entry
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <string.h>
  #include <signal.h>