interrupt interpreter thread in GUI instead of calling "raise (SIGINT)" * thread-manager.h, thread-manager.cc: New files. * libgui/src/module.mk: Update file lists. * octave-gui.cc (octave_start_gui): Block SIGINT at startup. * octave-interpreter.h, octave-interpreter.cc (octave_interpreter::thread_manager): New data member. (octave_interpreter::execute): Register current thread and unblock interrupt signal. (octave_interpreter::interrupt): Call thread_manager::interrupt instead of calling ::raising (SIGINT).

--- a/libgui/src/octave-interpreter.cc
+++ b/libgui/src/octave-interpreter.cc
@@ -36,6 +36,10 @@
 void
 octave_interpreter::execute (void)
 {
+  thread_manager.register_current_thread ();
+
+  octave_thread_manager::unblock_interrupt_signal ();
+
   octave_initialize_interpreter (octave_cmdline_argc, octave_cmdline_argv,
                                  octave_embedded);
 
@@ -45,5 +49,5 @@
 void
 octave_interpreter::interrupt (void)
 {
-  ::raise (SIGINT);
+  thread_manager.interrupt ();
 }