add help for word at mouse or text cursor to the editors context menu * octave-qscintilla.h: new class derived from qsciscintilla to get acces to the editors context menu * octave-qscxintilla.cc(contextMenuEvent): create standard context menu and add entry for calling help on current word at cursor (contextmenu_help): handler for the new menu entry * libgui/src/module.mk: add new files octave_qscintilla.cc/.h * file-editor-tab.cc(constructor): _edit_area is of class octave_qscintilla, connect the signal of this class for command execution (execute_command_in_terminal): slot for signal connected in contructor * file-editor-tab.h: new slot for executing a command in terminal, _edit_area is of new class octave_qscintilla

--- a/libgui/src/m-editor/file-editor.cc
+++ b/libgui/src/m-editor/file-editor.cc
@@ -1082,6 +1082,9 @@
   connect (f, SIGNAL (run_file_signal (const QFileInfo&)),
            parent (), SLOT (run_file_in_terminal (const QFileInfo&)));
   
+  connect (f, SIGNAL (execute_command_in_terminal_signal (const QString&)),
+           parent (), SLOT (execute_command_in_terminal (const QString&)));
+
   // Signals from the file_editor non-trivial operations
   connect (this, SIGNAL (fetab_settings_changed (const QSettings *)),
            f, SLOT (notice_settings (const QSettings *)));