Another merge with Radeks branch (Fix memory leak in cache invalidation).
Another merge with Radeks branch (Fix memory leak in cache invalidation).

yogoloth/unionfs-fuse,jrk/unionfs-fuse,evnu/unionfs-fuse,jrk/unionfs-fuse,kissthink/unionfs-fuse-1,kissthink/unionfs-fuse-1,jrk/unionfs-fuse,evnu/unionfs-fuse,evnu/unionfs-fuse,kissthink/unionfs-fuse-1,yogoloth/unionfs-fuse,jrk/unionfs-fuse,yogoloth/unionfs-fuse