Backport on R16

[Jacques Le Roux]

Hi,

Yesterday we had a small conversation with Pawan on Slack. He wondered why I did not backport to R16 since we switched to Git. I explained that it was 
more laziness than everything else. I asked him how he was doing it. As I suspected it's all by hand. That's why I'm reluctant to do it.

Currently I backport in Git (to R18 and R17) by cherry picking. That's also hand work. I think we should concentrate on the tools necessary to 
backport with Git. Like the convenient scripts we had previously with Svn.

And if we want to continuously/seriously backport to R16 we need a such tool too, from Git to Svn, using patches maybe. An alternative is to stop 
supporting R16 and release R17. Sincerely, I'm actually more inclined to this alternative...

My 2 cts

Jacques