fdo#72645: Allow GETPIVOTDATA to get result from leaf node of result tree.

Change-Id: I0fc1fd069440ed6fee378fc2dfd2ed761afbdeab
fdo#72645: Case-insensitive string comparison in GETPIVOTDATA.

Change-Id: Ibdb2b7ab2bae03875a3462816e860f58d9076457