OpenJDK 7, 7u, 7u6, 8, lambda and jigsaw with new build infra

[Henri Gomez]

> Hello Henri,
>
> The build-infra project is only targeting jdk8 for now. When the project
> started, there were no jdk8 repositories to base it on, so it was started on
> jdk7-based repositories. Since jdk8 was started, the build-infra/jdk7 forest
> is abandoned and shouldn't be used.
>
> The jdk8 master is buildable with the new build system, at least on linux,
> but it's not yet fully supported. We do not yet guarantee that the new build
> system will produce the same result as the old. I believe the same thing is
> true for lambda. Jigsaw is not compatible with the new build system yet.

Thanks.

I will wait a bit to move my OSX packages build scripts to new build-infra so :)