5261 libm should stop using synonyms.h
5298 fabs is 0-sized, confuses dis(1) and others
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Approved by: Gordon Ross <gwr@nexenta.com>

*** 31,41 ****
  #include "libm.h"
  LIBM_ANSI_PRAGMA_WEAK(isnanf,function)
          .weak _isnanf
          .type _isnanf,@function
  _isnanf = __isnanf
- #include "libm_synonyms.h"
  
          ENTRY(isnanf)
          movl    4(%esp),%eax            / eax <-- x
          andl    $0x7fffffff,%eax        / eax <-- abs(x)
          subl    $0x7f800000,%eax        / ZF <-- 1      iff x is infinite
--- 31,40 ----