- define a EP_parserstate_s
- structure to union
- remove clist usage
- add a errorcode to string function
- error codes are EP_errornr_s
- prefix everything with EP_
- replace mailimf_write to fnprintf-like
	fnprintf = fnprintf( int (*)(void *Data, char *
              Buf, long l ), void * Data, char * Format, ... )
- mailimf_dot_atom_text_free
- mailimf_address_XX -> _new(void) _init(&addr, ...) _free(addr)
- in fact that data structure should then also contain a
     'dynamically' allocated flag

- RFC 822 : test the examples
- RFC 2822 : obsolete syntax