Transition SortedDocValuesField to BinaryPoint to support efficient deletes in Lucene

[jleach4]

Binary Points have been optimized for deletes in the new versions of Lucene.

From the javadoc…

/**

• Create a query for matching an exact {@link BytesRef} value.

• NOTE: Such queries cannot efficiently advance to the next match,

• which makes them slow if they are not ANDed with a selective query. As a
• consequence, they are best used wrapped in an {@link IndexOrDocValuesQuery},
• alongside a range query that executes on points, such as
• {@link BinaryPoint#newExactQuery}. */ public static Query newSlowExactQuery(String field, BytesRef value) {