implemented container integrity checkers
Merge branch 'develop' into node-checkers
don't use extra space for rbtree checkers
check const containers
Merge branch 'develop' into node-checkers
Merge branch 'mateidavid-node-checkers' into develop
Updated 1.57 changelist with node checkers
Added test for parent_from_member utility
Implemented N3644 (Null Forward Iterators)
Fixed copy-paste error from copyright.
Avoid inheritance from std::iterator_traits as iterators become too fat.
Changed runtime to Multithreaded
Renamed iterator to reverse_iterator
Replaced boost/move/move.hpp with a more lightweight boost/move/utility_core.hpp
Fixes #10520 in Boost Trac
Removed some unused preprocessor includes
Updated changelog with ticket #10520
Fixed #10469: Erasing from intrusive unordered_multiset with optimize_multikey goes into an infinite loop
Updated changelog with #10469
Removed unused variables warnings.