(TARGET_HARD_FLOAT, TARGET_SOFT_FLOAT): Define.
(TARGET_SWITCHES): Add -msoft-float, -mhard-float.
(BYTES_BIG_ENDIAN): Delete #ifndef/#endif.
(CONDITIONAL_REGISTER_USAGE): If -msoft-float, disable fp regs.
(FUNCTION_VALUE): R16 is return reg only if !-msoft-float.
(LIBCALL_VALUE): Likewise.

From-SVN: r9161