Clarify TODO to call reinit() on fatal error
Work around token expiry problem

I spent some time chasing down the token expiry, fixed it in goauth2,
and filed a bug with a patch for the fix.  Since I don't know how long
it'll take for that to be accepted, I also implemented this cheap hack
to paper over the problem for now.
Re-enable parallel queries

To my surprise, I went to start digging into this, and apparently
whatever was causing this failure got fixed along the way.
Merge branch 'master' of https://github.com/asjoyner/fuse_gdrive