eliminate use of USE_64_BIT_IDX_T * common.mk (do_subst_config_vals, do_subst_cross_config_vals): Don't substitute OCTAVE_CONF_USE_64_BIT_IDX_T. * toplev.cc (octave_config_info): Set USE_64_BIT_IDX_T from OCTAVE_CONF_ENABLE_64. * oct-conf.in.h (OCTAVE_CONF_USE_64_BIT_IDX_T): Delete macro. * oct-hdf5.h, amd.cc, ccolamd.cc, colamd.cc, dmperm.cc, symbfact.cc, ov.cc, CSparse.cc, CSparse.h, MArray-i.cc, dSparse.cc, dSparse.h, SparseCmplxQR.h, SparseQR.h, sparse-base-chol.cc, lo-array-errwarn.cc, lo-array-gripes.cc, oct-sparse.h, acinclude.m4, oct-conf-post.in.h, computer.m: Use ENABLE_64 instead of USE_64_BIT_IDX_T.

#!/bin/sh
#
# Like mv $1 $2, but if the files are the same, just delete $1.
# Status is 0 if $2 is changed, 1 otherwise.

if test -r $2; then
  if cmp $1 $2 > /dev/null; then
    echo $2 is unchanged 1>&2
    rm -f $1
  else
    mv -f $1 $2
  fi
else
  mv -f $1 $2
fi