5261 libm should stop using synonyms.h

*** 27,38 ****
   */
  
          .file "exp10l.s"
  
  #include "libm.h"
- LIBM_ANSI_PRAGMA_WEAK(exp10l,function)
- #include "libm_synonyms.h"
  
          .data
          .align  4
  lt2_hi: .long   0xfbd00000, 0x9a209a84, 0x00003ffd
  lt2_lo: .long   0x653f4837, 0x8677076a, 0x0000bfc9
--- 27,36 ----