MC unit handling on interface to XCSoar about xcvario

[iltis42]

Fix keeping standard format in hPa and inHg only for display comes here:
769eb98

[hjr]

Please reopen. The fix is not related to the issue and does not fix it.

[iltis42]

For testing:
508311d

[iltis42]

In my gadgets i don't see issue with above change , can this be closed ?

[hjr]

Will double check. one moment.

[hjr]

Ok, now the setting seems to be right, but just the display indicates m/s always. Will fix too.

[hjr]

Contributed with PR #82 a bit to it but this is not yet completely fixed. Choosing r.g. 100ft/min as vario unit still shows on the config setting where you change the MC value a m/s figure, but x 100ft/min right behind it. This need to be a fit to the figure as well.

[iltis42]

Sure the MC setup screen needed the unit from vario for Units:: as well. Will crosscheck this also.

[iltis42]

Apparently the new blackboard approach fixes this.

[hjr]

Yip, please close. #86 was dedicated to this issue. The specific class Vario can display vertical speeds in configured units.