fix running files from file browser's context menu * main-window.cc(run_file_in_terminal): new slot for run_file_signal (run_file_callback): callback for running files after checking the path * main-window.h: new functions run_file_in_terminal und run_file_callback) * files-dock-widget.cc(constructor): connect signal to slot for running files (contextmenu_run): emit run_file_signal with QFileInfo as parameter * files-dock-widget.h: run_file_signal has QFileInfo as parameter * file-editor-tab.cc: removed function run_file_callback (run_file): get file info of current file and emit run_file_signal (file_in_path): moved to octave_qt_link allowiung access from other widgets, updated calls to this functions * file-editor-tab.h: new run_file_signal with QFileInfo, removed functions run_file_callback and file_in_path * file-editor.cc(add_file_editor_tab): connect signal to slot for running files * octave-qt-link.cc/h(file_in_path): moved from file-editor-tab and made static

--- a/libgui/src/main-window.h
+++ b/libgui/src/main-window.h
@@ -116,6 +116,7 @@
   void accept_directory_line_edit (void);
 
   void execute_command_in_terminal(const QString& dir);
+  void run_file_in_terminal(const QFileInfo& info);
 
   void handle_new_figure_request (void);
 
@@ -213,6 +214,7 @@
   void clear_history_callback (void);
 
   void execute_command_callback (const std::string& command);
+  void run_file_callback (const QFileInfo& info);
 
   void new_figure_callback (void);