base: Enable large file support for OFD locking impl.
Not only is this a good idea in general but this should also avoid
issue #17950 (closed) by ensuring that off_t is 64-bits.
Fixes #17950 (closed).
Todo
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Test with testcase in #17941 (closed)
Not only is this a good idea in general but this should also avoid
issue #17950 (closed) by ensuring that off_t is 64-bits.
Fixes #17950 (closed).