Fix fseeko configure check on Android for API level < 24
The availability depends on the _FILE_OFFSET_BITS define, which is set in config.h. So we need to have this during the configure check as well, to test under the same conditions.
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The availability depends on the _FILE_OFFSET_BITS define, which is set in config.h. So we need to have this during the configure check as well, to test under the same conditions.