prior mv-complete-itr-close branch was a guess. this is now a fix to root cause.  (steve v. isolated via valgrind then verified this fix)
Merge pull request #126 from basho/mv-complete-itr-close2

prior mv-complete-itr-close branch was a guess. this is now a fix to roo...
change leveldb tag to 2.0
Update leveldb pointer to 2.0.0 tag
Update dependencies to point to tags for 2.0
Merge branch '2.0' into develop