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 += @ftp

@ftp_FCN_FILES = \
  @ftp/ascii.m \
  @ftp/binary.m  \
  @ftp/cd.m  \
  @ftp/close.m  \
  @ftp/delete.m  \
  @ftp/dir.m  \
  @ftp/display.m  \
  @ftp/ftp.m  \
  @ftp/loadobj.m  \
  @ftp/mget.m  \
  @ftp/mkdir.m  \
  @ftp/mput.m  \
  @ftp/rename.m  \
  @ftp/rmdir.m  \
  @ftp/saveobj.m

FCN_FILES += $(@ftp_FCN_FILES)

PKG_ADD_FILES += @ftp/PKG_ADD

DIRSTAMP_FILES += @ftp/$(octave_dirstamp)