Document client requirements for in-place import on Windows.

This PR updates the documentation and explains what option needs to be used to get in-place import working on Windows. It also mentions the limitations of ``ln_rm``. It is a direct result of https://github.com/openmicroscopy/openmicroscopy/pull/2242#commits-pushed-a394dd6.

/cc @joshmoore
Can this version compatibility issue be made any more specific? (E.g., is it exactly if one is < 5.0.3 and the other is ≥ 5.0.3 ?)