Improve Private Storage detection. MCabber now correctly detects Private Storage support when receiving an item-not-found error (which doesn't mean the server has no support for P.S., but that it's empty). I've added a return value to the callback functions. For now the return value is only used for IQ error handling.

#ifndef __HELP_H__
#define __HELP_H__ 1

int help_process(char *string);

#endif /* __HELP_H__ */

/* vim: set expandtab cindent cinoptions=>2\:2(0:  For Vim users... */