doc: Update more docstrings to have one sentence summary as first line. Reviewed miscellaneous, sparse, strings in scripts directory. * scripts/miscellaneous/bzip2.m, scripts/miscellaneous/citation.m, scripts/miscellaneous/compare_versions.m, scripts/miscellaneous/computer.m, scripts/miscellaneous/debug.m, scripts/miscellaneous/dir.m, scripts/miscellaneous/edit.m, scripts/miscellaneous/error_ids.m, scripts/miscellaneous/fileattrib.m, scripts/miscellaneous/fullfile.m, scripts/miscellaneous/genvarname.m, scripts/miscellaneous/gzip.m, scripts/miscellaneous/mkoctfile.m, scripts/miscellaneous/news.m, scripts/miscellaneous/open.m, scripts/miscellaneous/parseparams.m, scripts/miscellaneous/recycle.m, scripts/miscellaneous/run.m, scripts/miscellaneous/swapbytes.m, scripts/miscellaneous/tar.m, scripts/miscellaneous/tmpnam.m, scripts/miscellaneous/unpack.m, scripts/miscellaneous/what.m, scripts/sparse/bicg.m, scripts/sparse/bicgstab.m, scripts/sparse/cgs.m, scripts/sparse/colperm.m, scripts/sparse/eigs.m, scripts/sparse/etreeplot.m, scripts/sparse/gmres.m, scripts/sparse/gplot.m, scripts/sparse/ichol.m, scripts/sparse/ilu.m, scripts/sparse/pcg.m, scripts/sparse/pcr.m, scripts/sparse/qmr.m, scripts/sparse/spaugment.m, scripts/sparse/spconvert.m, scripts/sparse/spdiags.m, scripts/sparse/spfun.m, scripts/sparse/spones.m, scripts/sparse/sprandsym.m, scripts/sparse/spstats.m, scripts/sparse/spy.m, scripts/sparse/svds.m, scripts/sparse/treelayout.m, scripts/sparse/treeplot.m, scripts/strings/base2dec.m, scripts/strings/bin2dec.m, scripts/strings/blanks.m, scripts/strings/cstrcat.m, scripts/strings/deblank.m, scripts/strings/dec2base.m, scripts/strings/dec2bin.m, scripts/strings/dec2hex.m, scripts/strings/findstr.m, scripts/strings/hex2dec.m, scripts/strings/index.m, scripts/strings/isletter.m, scripts/strings/isstrprop.m, scripts/strings/mat2str.m, scripts/strings/ostrsplit.m, scripts/strings/regexptranslate.m, scripts/strings/rindex.m, scripts/strings/str2num.m, scripts/strings/strcat.m, scripts/strings/strchr.m, scripts/strings/strjoin.m, scripts/strings/strjust.m, scripts/strings/strmatch.m, scripts/strings/strsplit.m, scripts/strings/strtok.m, scripts/strings/strtrim.m, scripts/strings/strtrunc.m, scripts/strings/substr.m, scripts/strings/untabify.m, scripts/time/datenum.m: Update more docstrings to have one sentence summary as first line.

FCN_FILE_DIRS += pkg

pkg_PRIVATE_FCN_FILES = \
  pkg/private/build.m \
  pkg/private/configure_make.m \
  pkg/private/copy_files.m \
  pkg/private/create_pkgadddel.m \
  pkg/private/default_prefix.m \
  pkg/private/describe.m \
  pkg/private/dirempty.m \
  pkg/private/extract_pkg.m \
  pkg/private/finish_installation.m \
  pkg/private/fix_depends.m \
  pkg/private/fix_version.m \
  pkg/private/generate_lookfor_cache.m \
  pkg/private/get_description.m \
  pkg/private/get_forge_download.m \
  pkg/private/get_forge_pkg.m \
  pkg/private/getarch.m \
  pkg/private/getarchdir.m \
  pkg/private/getarchprefix.m \
  pkg/private/get_unsatisfied_deps.m \
  pkg/private/install.m \
  pkg/private/installed_packages.m \
  pkg/private/is_architecture_dependent.m \
  pkg/private/list_forge_packages.m \
  pkg/private/load_package_dirs.m \
  pkg/private/load_packages.m \
  pkg/private/load_packages_and_dependencies.m \
  pkg/private/packinfo_copy_file.m \
  pkg/private/parse_pkg_idx.m \
  pkg/private/prepare_installation.m \
  pkg/private/print_package_description.m \
  pkg/private/rebuild.m \
  pkg/private/repackage.m \
  pkg/private/save_order.m \
  pkg/private/shell.m \
  pkg/private/uninstall.m \
  pkg/private/unload_packages.m \
  pkg/private/verify_directory.m \
  pkg/private/write_index.m


pkg_FCN_FILES = \
  pkg/pkg.m \
  $(pkg_PRIVATE_FCN_FILES)

FCN_FILES += $(pkg_FCN_FILES)

PKG_ADD_FILES += pkg/PKG_ADD

DIRSTAMP_FILES += pkg/$(octave_dirstamp)