The current code supports Python 2 and Python 3 based debugger backends
(gdb, lldb) at the same time, but we'd like to drop Python 2 support
so we can take advantage of some of Python 3's goodies.
This copy here is not meant to be used in general but could perhaps be
used to replace the main code in situations that cannot use Python 3 yet.
Change-Id: I62273bc41b5a1e3a24720e167e64e4eac2e0c056
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
