Simplify EPlugin loading at startup.

- Require all EPlugin and EPluginHook subtypes be registered before
  loading plugins.  This drastically simplifies the EPlugin/EPluginHook
  negotiation.

- Turn most EPluginHook subtypes into GTypeModules and register their
  types from an e_module_load() function (does not include shell hooks).

- Convert EPluginLib and the Mono and Python bindings to GTypeModules
  and register their types from an e_module_load() function, and kill
  EPluginTypeHook.

modules/plugin-python/e-plugin-python.h

@@ -0,0 +1,70 @@
+/*
+ * e-plugin-python.h
+ *
+ * This program 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) version 3.
+ *
+ * This program 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 the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#ifndef E_PLUGIN_PYTHON_H
+#define E_PLUGIN_PYTHON_H
+
+#include <e-util/e-plugin.h>
+
+/* Standard GObject macros */
+#define E_TYPE_PLUGIN_PYTHON \
+	(e_plugin_python_get_type ())
+#define E_PLUGIN_PYTHON(obj) \
+	(G_TYPE_CHECK_INSTANCE_CAST \
+	((obj), E_TYPE_PLUGIN_PYTHON, EPluginPython))
+#define E_PLUGIN_PYTHON_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_CAST \
+	((cls), E_TYPE_PLUGIN_PYTHON, EPluginPythonClass))
+#define E_IS_PLUGIN_PYTHON(obj) \
+	(G_TYPE_CHECK_INSTANCE_TYPE \
+	((obj), E_TYPE_PLUGIN_PYTHON))
+#define E_IS_PLUGIN_PYTHON_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_TYPE \
+	((cls), E_TYPE_PLUGIN_PYTHON))
+#define E_PLUGIN_PYTHON_GET_CLASS(obj) \
+	(G_TYPE_INSTANCE_GET_CLASS \
+	((obj), E_TYPE_PLUGIN_PYTHON, EPluginPythonClass))
+
+G_BEGIN_DECLS
+
+typedef struct _EPluginPython EPluginPython;
+typedef struct _EPluginPythonClass EPluginPythonClass;
+typedef struct _EPluginPythonPrivate EPluginPythonPrivate;
+
+struct _EPluginPython {
+	EPlugin parent;
+	EPluginPythonPrivate *priv;
+
+	gchar *location;
+	gchar *pClass;
+	gchar *module_name;
+};
+
+struct _EPluginPythonClass {
+	EPluginClass parent_class;
+};
+
+GType		e_plugin_python_get_type	(void);
+void		e_plugin_python_register_type	(GTypeModule *type_module);
+
+G_END_DECLS
+
+#endif /* E_PLUGIN_PYTHON_H */