Merge new changes from memfs

[Ceiridge]

• [x] https://github.com/winfsp/winfsp/commit/98421fe11b77a1be1dd10d30478cc6d8d2b4b0ee

• [x] https://github.com/winfsp/winfsp/commit/1a879e330298ef9ddca145da2acc98ba60f5e1bf#diff-0d483516dddf0df5e361a2805a1009af955ed0912b04f0f55cb16217de5e4edc

• [x] https://github.com/winfsp/winfsp/commit/75620332c724b3c6da0be146487108301735896d

• [x] https://github.com/winfsp/winfsp/commit/09ab9de32cc46525cbf9e549b74d8dc6276536ea

• [ ] https://github.com/winfsp/winfsp/commit/9670caa3fe7b48d4c58575b69c0aa6068704e03a

Assuming that there is a new release of WinFsp with InterlockedLoad32 added, also this:

• [x] https://github.com/winfsp/winfsp/commit/29251dc2be4ce69737db2abed42c3ff7123e2771