merge recent changes
Patches applied:

 * robert.collins@canonical.com/soyuz--devel--0--patch-6
   add raw lib symlink

 * robert.collins@canonical.com/soyuz--devel--0--patch-7
   merge up with upstream

 * robert.collins@canonical.com/soyuz--devel--0--patch-8
   reinstate the correct sourcerer symlink.

 * robert.collins@canonical.com/soyuz--devel--0--patch-9
   create a meaningful make check target for soyuz - checks all non-pure-python subprojects

 * robert.collins@canonical.com/soyuz--devel--0--patch-10
   link in the deb python package

 * robert.collins@canonical.com/soyuz--devel--0--patch-11
   merge from rocketfuel.