kpm restore tries to resolve framework assemblies

[Praburaj]

"frameworks": {
        "aspnet50": {
            "frameworkAssemblies": {
                "System.Xml": "4.0.0.0",
                "System.Data": "4.0.0.0"
            }
        }
    }

Try doing a kpm restore on this project.json to see this error.

Resolving complete, 7927ms elapsed
Unable to locate System.Xml >= 4.0.0.0
Unable to locate System.Data >= 4.0.0.0
Restore complete, 8526ms elapsed

#640

[davidfowl]

Fixed in 0088654