upgrade setuptools to version 2.0
Merge branch 'master' into setuptools2

Conflicts:
	build/pkgs/setuptools/checksums.ini
upgrade to setuptools 2.0.1
Update sagenb to version 0.10.7.3
Update sagenb version to 0.10.8
Trac #15569: upgrade sagenb to version 0.10.8

Includes a number of small bug fixes.

"Upstream" Tarball: [https://googledrive.com/host/0B2kYdLdBVFHIZEd4ekpjN
UFBNTQ/sagenb-0.10.8.tar  sagenb-0.10.8.tar]

URL: http://trac.sagemath.org/15569
Reported by: ohanar
Ticket author(s): R. Andrew Ohana, John Palmieri, Punarbasu Purkayastha
Reviewer(s): R. Andrew Ohana, John Palmieri
Trac #15510: upgrade setuptools to version 2.0.1

Source Tarball: [[https://pypi.python.org/packages/source/s/setuptools/s
etuptools-2.0.1.tar.gz|setuptools-2.0.1.tar.gz]]

URL: http://trac.sagemath.org/15510
Reported by: ohanar
Ticket author(s): R. Andrew Ohana
Reviewer(s): John Palmieri