[CA-115411] Skip XS_* responses that are not supported in the windows frontend.

Add a warning displaying the type, but otherwise do nothing with unknown responses.
(v2) Updated whitespace/tabbing and capitalization

Signed-off-by: Owen Smith <owen.smith@citrix.com>
Merge pull request #5 from OwenSmith/ca-115411

 [CA-115411] Skip XS_* responses that are not supported in the windows f...