[DF-1627] fixed review issue DF-1843.
[DF-993] android cpp crash report
[DF-1603] generate Java exption with CPP stack
[DF-1808] fixed.
[DF-1837] Add conditional values for Threads + Thread::SleepThread() + UnitTest
[DF-1837] Fix UnitTests MacOS & iOS project
Merge branch 'to_master' into to_master_qa