add cryo_support as include dir

pom.xml

@@ -18,6 +18,15 @@
             <plugin>
                 <groupId>org.freehep</groupId>
                 <artifactId>freehep-nar-plugin</artifactId>
+                <configuration>
+                    <cpp>
+                        <includePaths>
+                            <includePath>src</includePath>
+                            <includePath>src/cryo_support</includePath>
+                        </includePaths>
+                    </cpp>
+                </configuration>
+
             </plugin>
         </plugins>
     </build>