prepare for display of WARC bands

- add entries to tlf.h
- complete conversion table 'inxes[]' from band index to band mask
- add macros IsWARCiMask() and IsWarcIndex()
add statistics info also for warc bands

- countryscore and zonescore are evaluated only for non-warc bands
use new IsWarcIndex()
Extend searchlog() to show warc bands

- works only in QSO or DXPED mode where you are allowed to work
  the WARC bands
- fix for contest mode if there are some warc qsos in log
  (will not be shown now)

Based on HA2OS initial work on that. Thanks Ervin.