Cache.size optimizations

Now that we have a segmented data container and segmented store we can add optimizations for the Cache.size operation in various configurations.

If a store is configured, passivation must be disabled for any of these optimizations related to stores to work

1. Shared store can just invoke Store.size
2. No store & no expired entries can invoke DataContainer.sizeIncludingExpired(IntSet)
3. Non shared and segmented store can invoke Store.size(IntSet)