Log Message:
ham/xlog: Update to 2.0.22

- Changes for xlog version 2.0.22 - 2021-feb-27
  * Fixed empty ADIF file when Distance and Azimuth fields are in use
  * Distance must be "km" in ADIF output - fixed

- Changes for xlog version 2.0.21 - 2021-feb-18
  * Modified get_smeter and get_powerlevel to use default values
    (S9 and UNKNOWN) if hamlib cannot get values from the radio
    (e.g. quisk).
  * Be sure to use at least hamlib4.1 to avoid a crash that occurs
    when using the "Select a Radio" GUI more than once.
  * Modified configure.ac to check if compiler can support -W parameters
  * Updated cty.dat 20210218 (cty-3104)