Overhaul image, imagesc to use newplot and support low-level invocation form. * scripts/image/image.m: New variable do_new indicates high-level calling form. For high-level invocation, call newplot before __img__. Correct linearity check if vectors are reversed (high-to-low values). Only apply image properties to axes if doing a high-level invocation. * scripts/image/imagesc.m: New variable do_new indicates high-level calling form. Delete subfunction __imagesc__ and incorporate minimal amount of code into imagesc. Only apply climits for high-level invocation.

FCN_FILE_DIRS += special-matrix

special_matrix_FCN_FILES = \
  special-matrix/gallery.m \
  special-matrix/hadamard.m \
  special-matrix/hankel.m \
  special-matrix/hilb.m \
  special-matrix/invhilb.m \
  special-matrix/magic.m \
  special-matrix/pascal.m \
  special-matrix/rosser.m \
  special-matrix/toeplitz.m \
  special-matrix/vander.m \
  special-matrix/wilkinson.m

FCN_FILES += $(special_matrix_FCN_FILES)

PKG_ADD_FILES += special-matrix/PKG_ADD

DIRSTAMP_FILES += special-matrix/$(octave_dirstamp)