[chirp_devel] [PATCH 0 of 2] Initial RadioReference.com import support

[Tom Hayward]

Here is my initial attempt at RadioReference.com import support. It adds a menu
for RadioReference.com import which prompts for a zipcode. It determines the 
county for that zipcode and downloads all frequencies in the RR database for    
that county. There is no means to request state or federal frequencies with
this UI.

This feature requires a RadioReference.com Premium Subscription. 

If there is interest, I'll improve the UI so data can be queried with other 
parameters (zipcode is very limiting).


Tom KD7LXL