don't crash when concatenating structs with no fields * oct-map.cc (octave_map::cat (int, octave_idx_type, const octave_scalar_map*)): Quick return for N == 1. (octave_map::cat (int, octave_idx_type, const octave_map*)): Quick return for N == 1. Only call permute_to_correct_order if there are fields. Use dim_vector::concat to compute result dimensions if there are no fields. New tests for concatentation of structs with no fields. * pt-mat.cc (tm_const::init (const tree_matrix&)): Initialize all_1x1 to true if tree_matrix argument is not empty.

EXTRA_DIST += odepack/module.mk

libcruft_la_SOURCES += \
  odepack/cfode.f \
  odepack/dlsode.f \
  odepack/ewset.f \
  odepack/intdy.f \
  odepack/prepj.f \
  odepack/solsy.f \
  odepack/stode.f \
  odepack/vnorm.f \
  odepack/scfode.f \
  odepack/sewset.f \
  odepack/sintdy.f \
  odepack/slsode.f \
  odepack/sprepj.f \
  odepack/ssolsy.f \
  odepack/sstode.f \
  odepack/svnorm.f