Initial clean paths conversion.
Merge branch 'master' of github.com:pantheon-systems/fusedav into clean_paths
Mostly there.
Don't duplicate path data in the string.
Fix a couple cppcheck warnings.
Remove logically dead code for a case that no longer exists.
Fix cache pruning.
Fix double close.
Fixes from functional testing with PyWebDAV.
Merge pull request #79 from pantheon-systems/clean_paths

Use FUSE-friendly paths.