hopefully fix shutdown hang and tweak win compile

setup.py

@@ -135,7 +135,7 @@ if not OS == "win":
         sysconfig.get_config_vars()["OPT"] = ' '.join(cv_opt.split())
 else:
     boosttype = 'mt'
-    EXTRA_COMPILE_ARGS = [  '-DBOOST_WINDOWS',
+    EXTRA_COMPILE_ARGS = [  '-O2', '-DBOOST_WINDOWS',
                             '-Wno-missing-braces',
                             '-DWIN32_LEAN_AND_MEAN',
                             '-D_WIN32_WINNT=0x0500',

src/deluge_core.cpp

@@ -435,7 +435,7 @@ static PyObject *torrent_quit(PyObject *self, PyObject *args)
     delete M_settings;
     session_proxy sp = M_ses->abort();
     printf("core: shutting down session...\r\n");
-    delete M_ses;                // 100% CPU...
+    delete M_ses;
     Py_DECREF(M_constants);
 
     printf("core shut down.\r\n");

src/interface.py

@@ -1644,6 +1644,7 @@ want to remove all seeding torrents?")):
                 self.shutdown()
 
     def shutdown(self):
+        gtk.gdk.threads_enter()
         self.window.hide()
         self.save_column_widths()
         self.save_window_settings()