Added new features (-r cli arg, CQ-WW-RTTY extra field), fixed autofill bug

* 2ce5e5c: with '-r' argument helps to test Tlf, or usable, if the user doesn't want to swith on RIG, and doesn't want to modify logcfg.dat.
* 9f38587: I've found a bug in logit.c: if user modified the exchange field, which filled out by Tlf from cty.dat, then Tlf rewrite the original value. That was a littlebit disturbing.
* edb0efe: added extra field handling only in CQWW contest, and only in RTTY mode. The if the station is from US or Canada, then the two letter state/province field is mandatory