Mark all core script files as encoded in UTF-8 (bug #49685). * scripts/.oct-config, scripts/audio/.oct-config, scripts/deprecated/.oct-config, scripts/elfun/.oct-config, scripts/general/.oct-config, scripts/geometry/.oct-config, scripts/gui/.oct-config, scripts/help/.oct-config, scripts/image/.oct-config, scripts/io/.oct-config, scripts/java/.oct-config, scripts/linear-algebra/.oct-config, scripts/miscellaneous/.oct-config, scripts/ode/.oct-config, scripts/optimization/.oct-config, scripts/path/.oct-config, scripts/pkg/.oct-config, scripts/plot/appearance/.oct-config, scripts/plot/draw/.oct-config, scripts/plot/util/.oct-config, scripts/polynomial/.oct-config, scripts/prefs/.oct-config, scripts/profiler/.oct-config, scripts/set/.oct-config, scripts/signal/.oct-config, scripts/sparse/.oct-config, scripts/specfun/.oct-config, scripts/special-matrix/.oct-config, scripts/statistics/.oct-config, scripts/strings/.oct-config, scripts/testfun/.oct-config, scripts/tie/.oct-config, scripts/web/.oct-config: Add files with encoding settings to each directory. * scripts/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/ode/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/profiler/module.mk, scripts/set/module.mk, scripts/signal/module.mk, scripts/sparse/module.mk, scripts/specfun/module.mk, scripts/special-matrix/module.mk, scripts/statistics/module.mk, scripts/strings/module.mk, scripts/testfun/module.mk, scripts/tie/module.mk, scripts/web/module.mk: Add files with encoding setting to distribution