Symlinks bug #65
Description
Suppose such case:
/mnt/readonly_fs/some_symlink -> /var/real_file.
So, atomic_write('/mnt/readonly_fs/some_symlink') will try to create temporary file in /mnt/readonly_fs/. This is BUG. It should create temporary file in /var and replace /var/real_file accordingly.
The library have to resolve path recursively to get final path without any symlinks. It must do it before any operations.