SERVER-14082: freelist scan doesn't short circuit in MaxBucket
SERVER-13610 update even number of votes warning due to non-numeric votes
SERVER-13610 update even number of votes warning due to non-numeric votes
SERVER-13619 basic 2d geohash covering generator
SERVER-14109 migrate tests for OR inexactness to cpp
SERVER-14080 Have migration result reported in the changelog correctly

Signed-off-by: Benety Goh <benety@mongodb.com>