fix broken icon path after new icon structure in GUI * community-news.cc: use window icon configured in the preferences * documentation-dock-widget.cc (documentation_dock_widget) * files-dock-widget.cc (files_dock_widget) * history-dock-widget.cc (history_dock_widget) * terminal-dock-widget.cc (terminal_dock_widget) * variable-editor.cc (variable_editor) * workspace-view.cc (workspace_view) do not set window icon here as it is set in the main window * gui-preferences-dw.h: organize dw_icon_set_names in a hash * file-editor.cc (notice_settings): fix path to tab close icon on mac * find-dialog.cc (find_dialog): do not set window icon here, it is already set by the editor * main-window.cc (notice_settings): set dok widget icons using the new hash structure of available icon sets (construct): use global const settings instead of literal string for main window icon * octave-qobject.cc (release_notes_widget): pass base qobject to the release note constructor * release-notes.cc (release_notes): get qbase object as argument, get desired window icon from settings * release-notes.h: constructor with base object as argument * variable-editor.cc (toplevel_change): use icon path from const preferences instead of literal strings * welcome-wizard.cc (make_octave_logo): use icon path from const preferences instead of literal strings

%!shared A
%! A = [ ...
%!  1.00003+0.00000i, -0.68292+0.26406i, -0.57670+0.25291i,  0.34986+0.03335i;
%! -0.68292-0.26406i,  0.94539+0.00000i,  0.69006-0.03967i, -0.43847+0.38619i;
%! -0.57670-0.25291i,  0.69006+0.03967i,  0.95260+0.00000i, -0.34734+0.40728i;
%!  0.34986-0.03335i, -0.43847-0.38619i, -0.34734-0.40728i,  0.98356+0.00000i];
%!

%!test <*49904>
%! [Ainv, rcond] = inv (A);
%! assert (ishermitian (Ainv));
%! assert (A * Ainv, eye (4, 'double'), eps ('double') / rcond)

%!test <*49904>
%! [Ainv, rcond] = inv (single (A));
%! assert (ishermitian (Ainv));
%! assert (A * Ainv, eye (4, 'single'), eps ('single') / rcond)