nbproject\project.xml hard-coded paths

In vehicle-commander\source\VehicleCommander\nbproject\project.xml :

Use a property in the classpath for the ArcGIS Runtime install location (like build.xml does) to make it easier to change versions or between x86 and 64, 10.1.1 & 10.2.

I'm guessing this is just a Netbeans setting file so doesn't affect those using Ant/Eclipse. This is the section of project.xml in question:

```


${project.dir}/source/VehicleCommander/src
C:\Program Files (x86)\ArcGIS SDKs\java10.1.1\sdk\jars
```