avoid calling putback more than once between reads * liboctave/lo-utils.cc (octave_read_value<double>, (octave_read_value<float>): Save stream position with tellg. On failure, restore stream position with seekg. Avoid calling putback multiple times between stream reads. (octave_read_inf_nan_na, octave_read_float_inf_nan_na): Don't call putback. Make it the caller's responsibility to reset stream positioning on failed reads.

EXTRA_DIST += \
  m4/module.mk \
  m4/ax_blas.m4 \
  m4/ax_blas_f77_func.m4 \
  m4/ax_lapack.m4	\
  m4/ax_pthread.m4 \
  m4/gnulib-cache.m4 \
  m4/libtool.m4 \
  m4/ltoptions.m4 \
  m4/ltsugar.m4 \
  m4/ltversion.m4 \
  m4/lt~obsolete.m4