Rearrange source files to have a single launcher

This change also deletes (now obsolete) launcher. The functionality of
old python launcher is now completely integrated with the rest of
features.

Change-Id: I2cd7a79bb2727f83aa63b8a7029c70bbeabfbd41
(cherry picked from commit 5d11744df800ba34118de0e31db6324009e04513)
15 files changed