Fix name pipes in Windows 7

[yalegko]

dup microsoft#174

microsoft#173
Accept() blocks forever on Windows7, and all tests that rely on Accept() returning fail on Windows 7.
This commit broke it: bd71ef0
Windows 7 is behaving differently than Win10.
The fix is a workaround that used to exist before the breaking commit. I have re-introduced the client connect to ensure pipe instance is created. Not sure if there is a better fix.
Also, fixed a couple of tests which were failing on Windows 7.

[iwind]

Thank you, it solved my issue.