small fixes

src/App/Document.cpp

@@ -653,7 +653,7 @@ void Document::Save (Base::Writer &writer) const
     << " FreeCAD Document, see http://www.freecadweb.org for more information..." << endl
     << "-->" << endl;
 
-    writer.Stream() << "<Document SchemaVersion=\"4\">" << endl;
+    writer.Stream() << "<Document SchemaVersion=\"5\">" << endl;
 
     PropertyContainer::Save(writer);
 

src/App/PropertyLinks.cpp

@@ -558,7 +558,7 @@ PyObject *PropertyLinkSubList::getPyObject(void)
 #else
     Py::List sequence(count);
 #endif
-    for(int i = 0;i<count; i++){
+    for(unsigned int i = 0;i<count; i++){
         Py::Tuple tup(2);
         tup[0] = Py::Object(_lValueList[i]->getPyObject());
         std::string subItem;

src/Mod/Mesh/App/Core/Trim.cpp

@@ -157,7 +157,7 @@ bool MeshTrimming::PolygonContainsCompleteFacet(bool bInner, unsigned long ulInd
 bool MeshTrimming::IsPolygonPointInFacet(unsigned long ulIndex, Base::Vector3f& clPoint)
 {
     Base::Vector2D A, B, C, P;
-    float u,v,w, fDetPAC, fDetPBC, fDetPAB, fDetABC;
+    double u,v,w, fDetPAC, fDetPBC, fDetPAB, fDetABC;
     Base::Polygon2D clFacPoly;
     const MeshGeomFacet &rclFacet = myMesh.GetFacet(ulIndex);