* Feature/rebootid notice changes, backport of #9523
* Move to 3.4 and C++11-compatible code (except for test code)
* Backported tests/Mocks/Servers.{h,cpp}
* Rebuilt errorfiles
* Ported CallbackGuardTest from gtest to catch
* Ported RebootTrackerTest from gtest to catch
* Make sure the state method is called, so the overridden method is used during tests
* Fixed test to work with the old scheduler
* release version 3.4.8
* [3.4] fix agency lockup when removing 404-ed callbacks (#9839)
* Update arangod/Cluster/ServerState.cpp
Co-Authored-By: Markus Pfeiffer <markuspf@users.noreply.github.com>
* Instantiate the scheduler during ::prepare()
* Fix test crash introduced during backport
* Fix a compile error on Windows (thanks, V8)