[Vsintegration] When writing to a project file, the writer now detects duplicate properties in the same propertygroup and removes all but the first before writing.
[Vsintegration] When writing to a project file, the writer now detects duplicate properties in the same propertygroup and removes all but the first before writing.

X-Sharp/XSharpPublic,X-Sharp/XSharpPublic,X-Sharp/XSharpPublic,X-Sharp/XSharpPublic,X-Sharp/XSharpPublic