Pin docutils to 0.9.1.

Docutils 0.10 breaks manpage generation in sphinx 1.1.3. A fix to
sphinx has been merged, but not yet released (scheduled for dec
24-31). In the mean time, we should pin docutils to 0.9.1.

(Also add myself to Authors to allow merge tests to pass)

Fixes bug 1091333.

Change-Id: I0157c6d662ae8ceecb1440d245cfa06def1101db