* Bug fix/issue #9612 (#9764)
* Fixed ViewExecutionNode retrieval with deleted documents present in view
* Ported solution from 3.4 branch
* Changed index store in collection from vector to set. To make reversable indexes always last to execute
* Fixed re-enter hung
* Index storage fix
* Made index order deterministic
* Fix Mac build
* Added tests for index reversal
* Fixed Mac build
* Code cleanup
* Some cleanup
* Removed some redundand copy constructor calls
* Applied review comments
* Applied review comments
* Update CHANGELOG
* Update CHANGELOG
* issue 526.3: update analyzer feature to store analyzer definitions in per-vocbase system collections
* address merge issues
* address another merge issue
* issue 511.4: ensure IResearchLink can be initialized without view as required for db-server, minor code fixes and cleanup
* remove unnessesary checks
* revert last change due to test failures
* fix typo in change revert
* try to address random test failures
* issue 496.5: minor API cleanup and error reportin enhancements, update iresearch to commit d69f7bd184e009da7bf0a478efd34a0c85b74291
* add workaround for shell-collection-rocksdb-noncluster.js::testSystemSpecial test failure
* fix typo