Added MultiSignalSpy

Allows for testing of existence of lack of existence of signals coming
out of an object.
Unit test for TCPLInk
Cleanup of TCPLink from unit test findings
Added MultiSignalSpy

Allows for testing of existence of lack of existence of signals coming
out of an object.
Unit test for TCPLInk
Cleanup of TCPLink from unit test findings
Fix merge
Missing EOF newlines
Merge pull request #452 from DonLakeFlyer/TCPLinkUnitTest

TcpLink unit test