Add definitions for Tearing Reads, Forward/Back Index
Add definitions for Tearing Reads, Forward/Back Index

Change-Id: Ice7ac9606630f89924fb37337ef4bc85eb7b3b3a
Reviewed-on: http://review.couchbase.org/34470
Reviewed-by: Deepkaran Salooja <94315e58ef7caa1d9829288fe30465d5fa6ccd83@gmail.com>
Tested-by: Deepkaran Salooja <94315e58ef7caa1d9829288fe30465d5fa6ccd83@gmail.com>

jchris/indexing,jchris/indexing,jchris/indexing,t3rm1n4l/indexing,jchris/indexing,t3rm1n4l/indexing