Bug 298835 Merge e4 Project Path Variable back into the 3.6 stream
The virtual folder and filters changes are already in 3.6, the project path variable changes in e4 still remains to be merged.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/PathVariableDialog.java
* Sets the variable value.
     * 
     * @param variable the new variable value
     */
    public void setVariableValue(String variable) {
    	String userEditableString = ProjectPathVariableManager.convertToUserEditableFormat(variable);
        variableValue = userEditableString;
    }
    /**
     * @param resource
     */
    public void setResource(IResource resource) {
    	currentResource = resource;
    }
    /**
     * @param location
     */
    public void setLinkLocation(IPath location) {
    	String userEditableString = ProjectPathVariableManager.convertToUserEditableFormat(location.toPortableString());
        variableValue = userEditableString;
    }
    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.dialogs.Dialog#isResizable()
     */
    protected boolean isResizable() {
    	return true;
    }
}