Re: [PATCH v5 0/6] MR3418: Add tryok() for tests that sometimes get outside interference.

[Francois Gouget (＠fgouget)]

v5:
* tryok() no longer fails when called outside LOOP_ON_FLAKY_TESTS(). Instead it behaves like a regular ok() call. This is so one can use tryok() in a helper function that can be called either from a flaky loop or outside it:  
    LOOP_ON_FLAKY_TESTS(5) check_something(TRUE); // this case is flaky  
    check_something(FALSE); // but not this one
* Only kept a small subset of the tests tryok() can be used in to keep things simple and focused.
* Removed the debug traces and code for testing the tryok() mechanism.
* Tweaked the test.h comments some more.