Unified "sleep" functions to "octave_sleep" in C++ and "pause" in Octave. * doc/interpreter/system.txi: removed sleep and usleep from doc. * libinterp/corefcn/sysdep.cc (pause): updated docstring. * libinterp/corefcn/sysdep.cc (sleep): moved to deprecate sleep.m. * libinterp/corefcn/sysdep.cc (usleep): moved to deprecate usleep.m. * scripts/deprecated/sleep.m: moved here from sysdep.cc. * scripts/deprecated/usleep.m: moved here from sysdep.cc. * scripts/deprecated/module.mk: add sleep.m and usleep.m to build system. * NEWS: deprecation news for sleep and usleep. * libinterp/corefcn/data.cc: examples updated. * libinterp/corefcn/syscalls.cc: examples updated. * scripts/audio/@audioplayer/audioplayer.m: examples updated. * scripts/audio/@audiorecorder/audiorecorder.m: examples updated. * scripts/plot/util/ginput.m: examples updated. * scripts/plot/util/private/__gnuplot_get_var__.m: use pause. * scripts/plot/util/private/__gnuplot_ginput__.m: use pause. * libinterp/corefcn/utils.cc (octave_sleep): Unified "sleep" functions here. * libinterp/corefcn/utils.h: removed header cutils.h. * libinterp/corefcn/graphics.cc (drawnow): use octave_sleep. * libinterp/corefcn/graphics.cc (waitfor): use octave_sleep. * libinterp/corefcn/toplev.cc (clean_up_and_exit): use octave_sleep. * libinterp/corefcn/cutils.c: removed no longer needed code. * libinterp/corefcn/cutils.h: removed no longer needed header. * libinterp/corefcn/matherr.c: removed orphaned code. * libinterp/corefcn/module.mk: removed cutils.h, cutils.c, and matherr.c from build system.

FCN_FILE_DIRS += scripts/deprecated

scripts_deprecated_FCN_FILES = \
  scripts/deprecated/bicubic.m \
  scripts/deprecated/bitmax.m \
  scripts/deprecated/delaunay3.m \
  scripts/deprecated/dump_prefs.m \
  scripts/deprecated/find_dir_in_path.m \
  scripts/deprecated/finite.m \
  scripts/deprecated/fmod.m \
  scripts/deprecated/fnmatch.m \
  scripts/deprecated/gmap40.m \
  scripts/deprecated/isstr.m \
  scripts/deprecated/loadaudio.m \
  scripts/deprecated/luinc.m \
  scripts/deprecated/mahalanobis.m \
  scripts/deprecated/md5sum.m \
  scripts/deprecated/mouse_wheel_zoom.m \
  scripts/deprecated/nfields.m \
  scripts/deprecated/octave_tmp_file_name.m \
  scripts/deprecated/playaudio.m \
  scripts/deprecated/saveaudio.m \
  scripts/deprecated/setaudio.m \
  scripts/deprecated/sleep.m \
  scripts/deprecated/syl.m \
  scripts/deprecated/usage.m \
  scripts/deprecated/usleep.m \
  scripts/deprecated/wavread.m \
  scripts/deprecated/wavwrite.m

scripts_deprecateddir = $(fcnfiledir)/deprecated

scripts_deprecated_DATA = $(scripts_deprecated_FCN_FILES)

FCN_FILES += $(scripts_deprecated_FCN_FILES)

PKG_ADD_FILES += scripts/deprecated/PKG_ADD

DIRSTAMP_FILES += scripts/deprecated/$(octave_dirstamp)