* Added initial commit for event sync test cases (issue #1369, p.3.3)
* Added test cases for return event scenarios with and without out-of-order, work in progress (#1369, p.3.3)
* Added support for return event test cases for both regular and out-of-order command queue (#1369, p.3.3)
* Added user event test cases, cosmetic corrections (#1369, p.3.3)
* Added correction for windows build (#1369, p.3.3)
* Corrected proper testing of test fail/skip conditions (#1369, p.3.3)
* Added corrections related to PR review (#1369, p.3.3)
* Added correction related to change of order Skip/SetUp (issue #1369, event sync)
* Added clang format correction for previous commit
* Reordered initialization of attributes.
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