items are not marked as deleted/expired in couchstore after they expire (View query results with stale=false include expired items)

View query results with stale=false include expired items.

Steps to reproduce(build#1580):
1. Create default bucket
2. Load 10 json docs with expiry set to 30 seconds.
3. Create a view(default map func) and query with stale=false.
4. Wait for 2-3 minutes.
5. Query view again with stale=false.

Some of the items are still returned in the query results even when index is rebuilt.
I observed that the number of rows returned by the view query is always the same as curr_items.

Diagnostics are attached.