Move target output to session folder

[GoogleCodeExporter]

Putting output in the session directory makes creating targets easier to manage.

Reported by Gabbe Nord.

Original issue reported on code.google.com by surfacep...@gmail.com on 19 Feb 2013 at 5:35

[surfacepatterns]

This seemed like a good idea eight years ago, but, in hindsight (and with the perspective of how I want to change synthclone going forward), this was a poorly thought out idea.