doc: Update docstrings to have one sentence summary as first line. Update scripts in audio, elfun, general, geometry, and image directories. * scripts/audio/@audioplayer/__get_properties__.m, scripts/audio/@audioplayer/audioplayer.m, scripts/audio/@audioplayer/get.m, scripts/audio/@audioplayer/isplaying.m, scripts/audio/@audioplayer/play.m, scripts/audio/@audioplayer/playblocking.m, scripts/audio/@audioplayer/set.m, scripts/audio/@audioplayer/subsasgn.m, scripts/audio/@audioplayer/subsref.m, scripts/audio/@audiorecorder/audiorecorder.m, scripts/audio/@audiorecorder/get.m, scripts/audio/@audiorecorder/getaudiodata.m, scripts/audio/@audiorecorder/getplayer.m, scripts/audio/@audiorecorder/isrecording.m, scripts/audio/@audiorecorder/play.m, scripts/audio/@audiorecorder/record.m, scripts/audio/@audiorecorder/recordblocking.m, scripts/audio/@audiorecorder/set.m, scripts/audio/@audiorecorder/stop.m, scripts/audio/@audiorecorder/subsasgn.m, scripts/audio/@audiorecorder/subsref.m, scripts/audio/lin2mu.m, scripts/audio/mu2lin.m, scripts/audio/record.m, scripts/audio/sound.m, scripts/audio/soundsc.m, scripts/audio/wavread.m, scripts/audio/wavwrite.m, scripts/elfun/cosd.m, scripts/elfun/sind.m, scripts/elfun/tand.m, scripts/general/accumarray.m, scripts/general/accumdim.m, scripts/general/bitcmp.m, scripts/general/bitget.m, scripts/general/bitset.m, scripts/general/blkdiag.m, scripts/general/cart2pol.m, scripts/general/cart2sph.m, scripts/general/cell2mat.m, scripts/general/celldisp.m, scripts/general/chop.m, scripts/general/circshift.m, scripts/general/common_size.m, scripts/general/cplxpair.m, scripts/general/cumtrapz.m, scripts/general/dblquad.m, scripts/general/deal.m, scripts/general/del2.m, scripts/general/display.m, scripts/general/divergence.m, scripts/general/fieldnames.m, scripts/general/flip.m, scripts/general/flipdim.m, scripts/general/fliplr.m, scripts/general/flipud.m, scripts/general/gradient.m, scripts/general/interp3.m, scripts/general/interpft.m, scripts/general/interpn.m, scripts/general/loadobj.m, scripts/general/logspace.m, scripts/general/methods.m, scripts/general/nargchk.m, scripts/general/narginchk.m, scripts/general/nargoutchk.m, scripts/general/nextpow2.m, scripts/general/nthargout.m, scripts/general/num2str.m, scripts/general/pol2cart.m, scripts/general/polyarea.m, scripts/general/postpad.m, scripts/general/prepad.m, scripts/general/profile.m, scripts/general/quadgk.m, scripts/general/quadl.m, scripts/general/quadv.m, scripts/general/randi.m, scripts/general/rat.m, scripts/general/repmat.m, scripts/general/rot90.m, scripts/general/rotdim.m, scripts/general/saveobj.m, scripts/general/shift.m, scripts/general/shiftdim.m, scripts/general/sortrows.m, scripts/general/sph2cart.m, scripts/general/structfun.m, scripts/general/subsindex.m, scripts/general/trapz.m, scripts/general/triplequad.m, scripts/geometry/delaunayn.m, scripts/geometry/dsearch.m, scripts/geometry/dsearchn.m, scripts/geometry/griddata.m, scripts/geometry/griddata3.m, scripts/geometry/griddatan.m, scripts/geometry/inpolygon.m, scripts/geometry/rectint.m, scripts/geometry/tsearchn.m, scripts/geometry/voronoi.m, scripts/geometry/voronoin.m, scripts/help/__unimplemented__.m, scripts/help/doc.m, scripts/help/doc_cache_create.m, scripts/help/get_first_help_sentence.m, scripts/help/help.m, scripts/help/lookfor.m, scripts/help/print_usage.m, scripts/help/type.m, scripts/help/which.m, scripts/image/autumn.m, scripts/image/bone.m, scripts/image/brighten.m, scripts/image/cmpermute.m, scripts/image/colorcube.m, scripts/image/contrast.m, scripts/image/cool.m, scripts/image/copper.m, scripts/image/cubehelix.m, scripts/image/flag.m, scripts/image/gmap40.m, scripts/image/gray.m, scripts/image/gray2ind.m, scripts/image/hot.m, scripts/image/hsv.m, scripts/image/image.m, scripts/image/imagesc.m, scripts/image/imfinfo.m, scripts/image/imformats.m, scripts/image/imread.m, scripts/image/imshow.m, scripts/image/imwrite.m, scripts/image/iscolormap.m, scripts/image/jet.m, scripts/image/lines.m, scripts/image/ntsc2rgb.m, scripts/image/ocean.m, scripts/image/pink.m, scripts/image/prism.m, scripts/image/rainbow.m, scripts/image/rgb2ntsc.m, scripts/image/spinmap.m, scripts/image/spring.m, scripts/image/summer.m, scripts/image/white.m, scripts/image/winter.m: Update docstrings to have one sentence summary as first line. Re-structure to have line lengths <= 80 chars.

FCN_FILE_DIRS += plot

plot_util_GEN_FCN_FILES = \
  plot/util/gnuplot_binary.m

GEN_FCN_FILES += $(plot_util_GEN_FCN_FILES)

plot_util_PRIVATE_FCN_FILES = \
  plot/util/private/__add_default_menu__.m \
  plot/util/private/__ghostscript__.m \
  plot/util/private/__gnuplot_get_var__.m \
  plot/util/private/__gnuplot_ginput__.m \
  plot/util/private/__gnuplot_has_feature__.m \
  plot/util/private/__gnuplot_has_terminal__.m \
  plot/util/private/__gnuplot_open_stream__.m \
  plot/util/private/__gnuplot_print__.m \
  plot/util/private/__gnuplot_version__.m \
  plot/util/private/__go_draw_axes__.m \
  plot/util/private/__go_draw_figure__.m \
  plot/util/private/__opengl_print__.m \
  plot/util/private/__print_parse_opts__.m \
  plot/util/private/__tight_eps_bbox__.m

plot_util_FCN_FILES = \
  plot/util/__actual_axis_position__.m \
  plot/util/allchild.m \
  plot/util/ancestor.m \
  plot/util/axes.m \
  plot/util/cla.m \
  plot/util/clf.m \
  plot/util/close.m \
  plot/util/closereq.m \
  plot/util/colstyle.m \
  plot/util/copyobj.m \
  plot/util/__default_plot_options__.m \
  plot/util/figure.m \
  plot/util/findall.m \
  plot/util/findfigs.m \
  plot/util/findobj.m \
  plot/util/frame2im.m \
  plot/util/gca.m \
  plot/util/gcbf.m \
  plot/util/gcbo.m \
  plot/util/gcf.m \
  plot/util/gco.m \
  plot/util/ginput.m \
  plot/util/__gnuplot_drawnow__.m \
  plot/util/graphics_toolkit.m \
  plot/util/hdl2struct.m \
  plot/util/hggroup.m \
  plot/util/hgload.m \
  plot/util/hgsave.m \
  plot/util/hold.m \
  plot/util/im2frame.m \
  plot/util/isaxes.m \
  plot/util/isfigure.m \
  plot/util/ishghandle.m \
  plot/util/ishold.m \
  plot/util/isprop.m \
  plot/util/linkaxes.m \
  plot/util/linkprop.m \
  plot/util/meshgrid.m \
  plot/util/ndgrid.m \
  plot/util/newplot.m \
  plot/util/__next_line_color__.m \
  plot/util/__next_line_style__.m \
  plot/util/pan.m \
  plot/util/__plt_get_axis_arg__.m \
  plot/util/__pltopt__.m \
  plot/util/printd.m \
  plot/util/print.m \
  plot/util/refreshdata.m \
  plot/util/refresh.m \
  plot/util/rotate.m \
  plot/util/rotate3d.m \
  plot/util/saveas.m \
  plot/util/shg.m \
  plot/util/struct2hdl.m \
  plot/util/subplot.m \
  plot/util/zoom.m \
  $(plot_util_PRIVATE_FCN_FILES)

FCN_FILES += $(plot_util_FCN_FILES)

PKG_ADD_FILES += plot/util/PKG_ADD

DIRSTAMP_FILES += plot/util/$(octave_dirstamp)