Save where I am
Add rf_control after each rf_config
Fix compile errors
Fix save to eprom
Investigate problems with rf_config
Snapshot for jcw
Fix null value terminating rf12_config early.
Revert "Fix null value terminating rf12_config early."

This reverts commit e18c41588109a4bb5214a3dd38b236fe0e036d4d.
Fix null value terminating rf12_config early
Having problems with overflow of incr
Line 108 is confusing me it yields 4,294,939,616  instead of 300,000
Getting there, still some display control upsetting display around 2394 frequency
Improved precision of frequency, disappointed at use of long integers.
Correct offset for printing EEProm
How deep does this go?
Add sticky values to 'o' command

Improve usability when making large changes to the frequency offset.
Offset values above 99 become sticky and can be added by using the
single command 'o'.
Tidy up before trying to add part of @tht's work

Copy in the dB display from Thomas Mueller.
http://forum.jeelabs.net/node/1559
Add  @tht dB code, returns but what?

I would like to get the dB display of the received signal into mainline
code. I have COPIED @tht's code in but I don't yet understand if the
output is sensible.
Applied tweak as per Thomas
Tweaked offset to allow direction change

Value 255 changes the frequency direction of change.