5261 libm should stop using synonyms.h

*** 27,42 ****
   */
  
          .file "ieee_funcl.s"
  
  #include "libm.h"
- LIBM_ANSI_PRAGMA_WEAK(isinfl,function)
- LIBM_ANSI_PRAGMA_WEAK(isnormall,function)
- LIBM_ANSI_PRAGMA_WEAK(issubnormall,function)
- LIBM_ANSI_PRAGMA_WEAK(iszerol,function)
- LIBM_ANSI_PRAGMA_WEAK(signbitl,function)
- #include "libm_synonyms.h"
  
          ENTRY(isinfl)
          movl    12(%esp),%eax           / ax <-- sign and bexp of x 
          notl    %eax
          andl    $0x00007fff,%eax
--- 27,36 ----