Add of "modifier" hook, migration of charset plugin to new API, SIGHUP signal catched (reload all config files), better config files reloading

src/core/wee-command.h

@@ -20,6 +20,10 @@
 #ifndef __WEECHAT_COMMAND_H
 #define __WEECHAT_COMMAND_H 1
 
+struct t_gui_buffer;
+
+extern int command_reload (void *data, struct t_gui_buffer *buffer,
+                           int argc, char **argv, char **argv_eol);
 extern void command_init ();
 extern void command_print_stdout ();