Port to C89.
* data.c (arithcompare_driver): * fileio.c (Fcar_less_than_car): * fns.c (internal_equal): * frame.c (delete_frame): * lisp.h (enum More_Lisp_Bits): * lread.c (read1): Avoid C99 constructs that don't work in C89. * data.c (ULL_MAX, count_trailing_zeros_ll): New macros, to port to C89, which doesn't have 'long long'. (count_trailing_zero_bits): Use them.
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