fix path to common and spatial-math to the Travis reality

Author: petercorke

PackageToolbox.prj

@@ -322,8 +322,8 @@ coverage.xml</param.exclude.filters>
       <file>${PROJECT_ROOT}/Apps</file>
       <file>${PROJECT_ROOT}/data</file>
       <file>${PROJECT_ROOT}/models</file>
-      <file>${PROJECT_ROOT}/common</file>
-      <file>${PROJECT_ROOT}/spatial-math</file>
+      <file>${PROJECT_ROOT}/lib/common</file>
+      <file>${PROJECT_ROOT}/lib/spatial-math</file>
     </fileset.rootfiles>
     <fileset.depfun.included />
     <fileset.depfun.excluded />