[PATCH v4 0/4] MR3836: Added definitions and initial tests for FileRenameInformationEx and FileLinkInformationEx

[Joel Holdsworth (＠jhol)]

This patch-set adds the definitions and struct modifications required to eventually implement `FileRenameInformationEx` and `FileLinkInformationEx`.

The initial tests are copies of the tests for `FileRenameInformation` and `FileLinkInformation`, but with the `ReplaceIfExists` field replaced with the equivalient `Flag` value: `FILE_RENAME_REPLACE_IF_EXISTS` or `FILE_LINK_REPLACE_IF_EXISTS` respectively.

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  v4: ntdll/tests: Test both FileLinkInformation and FileLinkInformationEx in test_file_link_information.
      include: Add flags to FILE_LINK_INFORMATION used by FileLinkInformationEx.
      ntdll/tests: Test both FileRenameInformation and FileRenameInformationEx in test_file_rename_information.

https://gitlab.winehq.org/wine/wine/-/merge_requests/3836