osx: Improve the event loop

Implementation of event loop which works with GLib events, native OS X
events and Clutter events.

The event loop source code comes from the equivalent code in the Quartz
GDK backend from GTK+ 2.22.1, which is LGPL v2.1+ and thus compatible
with Clutter's licensing terms.

The code has been tested with libsoup, which did not work before together
with Clutter.

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>

http://bugzilla.clutter-project.org/show_bug.cgi?id=2490

clutter/osx/clutter-event-loop-osx.h

@@ -0,0 +1,32 @@
+/* Clutter -  An OpenGL based 'interactive canvas' library.
+ * OSX backend - event loop
+ *
+ * Copyright (C) 2005-2007 Imendio AB
+ * Copyright (C) 2011  Crystalnix  <vgachkaylo@crystalnix.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+#ifndef __CLUTTER_EVENT_LOOP_OSX_H__
+#define __CLUTTER_EVENT_LOOP_OSX_H__
+
+G_BEGIN_DECLS
+
+/* Initialization */
+void _clutter_osx_event_loop_init            (void);
+
+G_END_DECLS
+
+#endif