Rewrite the settings system
Settings now use glibc library, and can be used for aliases and bindings.
#ifndef __SETTINGS_H__
#define __SETTINGS_H__ 1
#include <glib.h>
#define SETTINGS_TYPE_OPTION 1
#define SETTINGS_TYPE_ALIAS 2
#define SETTINGS_TYPE_BINDING 3
#define settings_opt_get(k) settings_get(SETTINGS_TYPE_OPTION, k)
#define settings_opt_get_int(k) settings_get_int(SETTINGS_TYPE_OPTION, k)
void settings_set(guint type, gchar *key, gchar *value);
void settings_del(guint type, gchar *key);
gchar *settings_get(guint type, gchar *key);
int settings_get_int(guint type, gchar *key);
#endif /* __SETTINGS_H__ */