eliminate recursive make invocation in scripts directory tree * scripts/module.mk: New file created from scripts/Makefile.am * scripts/Makefile.am: Delete. * Makefile.am (SUBDIRS): Remove scripts from the list. * configure.ac (AC_CONFIG_FILES): Remove scripts/Makefile from the list. * doc/interpreter/images.awk, doc/module.mk, etc/module.mk, scripts/@ftp/module.mk, scripts/audio/module.mk, scripts/deprecated/module.mk, scripts/elfun/module.mk, scripts/general/module.mk, scripts/geometry/module.mk, scripts/gui/module.mk, scripts/help/module.mk, scripts/image/module.mk, scripts/io/module.mk, scripts/java/module.mk, scripts/linear-algebra/module.mk, scripts/miscellaneous/module.mk, scripts/optimization/module.mk, scripts/path/module.mk, scripts/pkg/module.mk, scripts/plot/appearance/module.mk, scripts/plot/draw/module.mk, scripts/plot/util/module.mk, scripts/polynomial/module.mk, scripts/prefs/module.mk, scripts/set/module.mk, scripts/signal/module.mk, scripts/sparse/module.mk, scripts/specfun/module.mk, scripts/special-matrix/module.mk, scripts/startup/module.mk, scripts/statistics/base/module.mk, scripts/statistics/distributions/module.mk, scripts/statistics/models/module.mk, scripts/statistics/tests/module.mk, scripts/strings/module.mk, scripts/testfun/module.mk, scripts/time/module.mk: Update for non-recursive build.

FCN_FILE_DIRS += scripts/prefs

scripts_prefs_PRIVATE_FCN_FILES = \
  scripts/prefs/private/loadprefs.m \
  scripts/prefs/private/prefsfile.m \
  scripts/prefs/private/saveprefs.m

scripts_prefs_FCN_FILES = \
  scripts/prefs/addpref.m \
  scripts/prefs/getpref.m \
  scripts/prefs/ispref.m \
  scripts/prefs/prefdir.m \
  scripts/prefs/preferences.m \
  scripts/prefs/rmpref.m \
  scripts/prefs/setpref.m \
  $(scripts_prefs_PRIVATE_FCN_FILES)

FCN_FILES += $(scripts_prefs_FCN_FILES)

PKG_ADD_FILES += scripts/prefs/PKG_ADD

DIRSTAMP_FILES += scripts/prefs/$(octave_dirstamp)