* Fix analyzer errors in Renci.SshNet and Renci.SshNet.TestTools.OpenSSH.
Suppress all errors in unit tests and integration tests.
* Update unit tests now that we pass 'mode' as argument name when we throw ArgumentException.
* Remove stale comment and add unit tests for SshData.ReadBytes(int length).
* Remove unnessary suppression.
* Remove Visual Studio magic.
* Removed duplicate source file.
* Clarified that suppression hides a false positive.
* Remove suppressions for S2372.
* Update ReadExtensionPair() to return concrete dictionary.
Gert Driesen