* If we miss a callback in CollectionCreation also test if we missed later callbacks.
* Updated changelog
* Fixed callback lockers
* Remove lockers vector alltogether, we are protected by mutex anyways
* Fixed include guard
* Do not recheck the Collection that has woken us up
* Fixed recursive lock gathering
* Prepare API to create multiple collections in a single request to ClusterMethods to improve speedup
* Added counter on how many collections are successfully created
* Allow multi collection creation one level higher
* CollectionMethods now allow batch createion of Collections
* Improved array size assertions
* Now a graph is createad within a single roundtrip in the agency.
* Added new header files
* Insert collections in the AGENCY with TTL and a isBuilding flag, collections with this flag should not be visisible in the coordinator
* Added forgotten C++ file
* Fixed a rare race condition, and the failing IResearch Tests
* readded callback on DONE, otherwise lists are out of sync
* Fixed assertions to let mocked tests pass...
* Fixed community cluster
* added check for empty scheduler
* removed log, old is 1 not 0
* require running in this thread
* test
* added isDirect to callback
* signature fixed
* added drain
* added allowDirectHandling
* disabled for testing
* Add ExecContextScope object to direct call.
* try alternate initialization of ExecContextScope
* remove ExecContextScope, no help. try _fifoSize as part of direct decision.
* strand management to minimize reuse of same strand per listen socket
* blind attempt to address Jenkins shutdown lock up. may remove quickly.
* add filename and line to existing error log message
* Adjust queueOperation() to stop accepting items once isStopping() becomes true.
* revert previous check-in to MMFilesCollectorThread.cpp
* big reformat
* fixed merge conflicts
* Add CHANGELOG entry.
* issue 496.5: backport 3.4: 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
the change in behavior crept in unintentionally due to my last
change of the index API. this PR reverts the unintended change
here so figures are only returned when explicitly requested