[oi-dev] pkg move to Python3.5 only

[Alexander Pyhalov]

Hi.

I've prepared two PRs: https://github.com/OpenIndiana/pkg5/pull/65 and https://github.com/OpenIndiana/oi-userland/pull/5192. 
First one imports latest fixes from OmniOS CE PKG repo, second switches oi-userland tools to use Python 3.5. Second PR should be merged immediately after first, as oi-userland uses Python 2.7 pkg modules.

I want some review (mostly, of userland parts) and testing (if possible).

Ideally I'd like to see full oi-userland rebuild with new PKG installed and PR#5192 applied.
 

С уважением,
Александр Пыхалов,
программист отдела телекоммуникационной инфраструктуры
управления информационно-коммуникационной инфраструктуры ЮФУ