@IgorB:
I am sorry that we totally missed this email from 5 days ago and just now accidentally found it.
Anyway, there is a ubuntu 16 static tar with all of the checked in mods at:

@Pierre:
There is also a Mint 18 with all of the current mods to include BT #346 @at:
    https://www.cinelerra-gg.org/download/testing/cinelerra-5.1-mint18-x86_64-static.txz

@All and Andrea:
Latest mods include Scaling and Rotating with acceleration like used in Tracer plugin.
And the Layout is fixed so that "Reset" translation fits in the box as recommended in BT #210.

@IgorB:
I would change the Off, On, Dbl labels to Off, AA, AA+
AA means AntiAliasing.

And, if possible, an hint when you are over it (Antialiasing).
GG added "Anti-Alias" as a tooltip, but does not want to change to AA and AA+ because they mean so many things.

I would like to test it, and the new nesting feature, on a Ubuntu16.04-LiveDVD next days.
If you can make a build for me, I thank you.