add self to path

[JackyWoo]

This pr try to close #2282

[JackyWoo]

@aleks-f Some OS such as FreeBSD not tested for less of CI tasks.

[JackyWoo]

@aleks-f Pls review if you have a changce.

1 test error, maybe unrelated.

There was 1 failure: 
 1: class CppUnit::TestCaller<class PollSetTest>.testPollClosedServer
    "fail: "
    in "<unknown>", line -1

[aleks-f]

@aleks-f Pls review if you have a changce.

I did review, but I do not se anything done about it

[JackyWoo]

@aleks-f I wonder whether Skip PathTest::testSelf on Windows is what your meaning

[aleks-f]

#4319