belliottsmith as a follow-up all time

bdbb071f4f87131d6996aac52f2b75a5833d5238 | Author: Joshua McKenzie <jmckenzie@apache.org>
 | 2015-01-07 13:05:31-06:00

    Remove ref counting in SSTableScanner, fix CompactionTask ordering
    
    Patch by jmckenzie; reviewed by belliottsmith as a follow-up for CASSANDRA-8399