[CA-119964] Add (excessive) event logging to id potential WMI failures

Signed-off-by: Ben Chalmers <Ben.Chalmers@citrix.com>
[ca-119964] Store LiteAgent symbols in xeniface tarfile
Merge branch 'master' of ssh://github.com/xenserver/win-xeniface into ca-119964
[CA-119964] Do not fail when WMI Remove does not provide a respose object

This is the expected behavior - it never provides a response object

(Also add some additional logging to help spot reasons for failure)

Signed-off-by: Ben Chalmers <Ben.Chalmers@citrix.com>
Merge pull request #6 from benchalmers/ca-119964

Ca 119964 Lite agent changes to log more errors when WMI watches are received

Approved by Ben Chalmers <ben.chalmers@citrix.com>