5261 libm should stop using synonyms.h

*** 26,36 ****
   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #include <sys/isa_defs.h>
- #include "libm_synonyms.h"
  #include "libm_inlines.h"
  
  #ifdef _LITTLE_ENDIAN
  #define HI(x)   *(1+(int*)x)
  #define LO(x)   *(unsigned*)x
--- 26,35 ----
*** 64,75 ****
   * Accuracy:
   *      Maximum error observed: less than 0.872 ulp after 16.777.216.000
   *      results.
   */
  
- #define sqrt __sqrt
- 
  extern double sqrt(double);
  extern double fabs(double);
  
  static const unsigned long long LCONST[] = {
  0x41b0000000000000ULL,  /* D2ON28 = 2 ** 28             */
--- 63,72 ----
*** 392,397 ****
                  *pz = res0;
  
                  pz += stridez;
          }
  }
- 
--- 389,393 ----