FGData Merge Request #168: Wingflex shader -further improvements (merged)

implemented the rotation matrix, see https://forum.flightgear.org/viewtopic.php?f=4&t=30802&start=105

[Bea Wolf]

This merge request is ready for merge, @jmturner could you merge it?

[James Turner]

Sure, I'll squash them together at the same time I think

[James Turner]

Hmm, small issue: I see six commits on your 'next' : besides the four above, there is also:

Improve wingflex shader+effect ( be7e278f1cc119f2a2930161151)
Minor changes, use int for type instead of organic bool

Should I merge all six, or jsut the four listed above? Since they seem related.

[Bea Wolf]

oops, yes it would be good if you could merge all commits there together, I didn't realise I hadn't included them into the merge request,

[James Turner]

Merged now!

[Bea Wolf]

Thank you very much!