Pressflow 7.34

Merged changes from 7.34.

Commands I used to generate this:

```
git clone --recursive git@github.com:mparker17/7.git && cd 7
git checkout master && git pull --rebase
git remote add drupal http://git.drupal.org/project/drupal.git && git fetch drupal
git remote add upstream https://github.com/pressflow/7.git && git fetch upstream
git merge upstream/master && git push origin master
git checkout -b pressflow-7.34
git merge 7.34
git push --set-upstream origin pressflow-7.34
```

Reviews welcome.