[development] file handling, open_basedir for 4.7?

Whats the consensus on supporting open_basedir for 4.7. I have one issue open with that I'd appreciate some external testing on... http://drupal.org/node/5961 If open_basedir support is not critical for 4.7 I'll downgrade the bug. Regardless I'd like to have it working. So if you have time for patch review please poke at it.