SERVER-1943 adding an index returns different results when their is an empty array

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• Closed

SERVER-2258 empty array matches itself without index, but not with index

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• Closed

SERVER-2902 Index keys are not generated for numerically referenced array elements

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• Closed

SERVER-3005 index key generation issue with parent and nested fields in same index and array containing subobject

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• Closed

SERVER-3216 sparse indexes not sparse in certain array cases

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• Closed