[OE-core] [PATCH 28/45] swig: move to Python 3

[alexander.kanavin at linux.intel.com]

> I'm trying to get my head around how this change will impact python2
> based programs that use swig, such as gnuradio.
>
> Does this mean all programs that use swig will need to move to python3
> now?

Probably. At least nothing in meta-oe or oe-core was impacted by this, as
far as I see, but if GNU radio isn't building properly anymore, then
copy-paste the error, and we'll work out a solution.

Alex