Fixed 4 gcc warnings (2x order, 1x explicit constructor, 1x GUI / from related)

src/blackmisc/pqphysicalquantity.cpp

@@ -25,7 +25,7 @@ namespace BlackMisc
          * (The implicitly generated copy constructor would suffice, but for what seems to be a bug in MSVC2010 template instantiation)
          */
         template <class MU, class PQ> CPhysicalQuantity<MU, PQ>::CPhysicalQuantity(const CPhysicalQuantity &other) :
-            m_value(other.m_value), m_unit(other.m_unit)
+            CValueObject(), m_value(other.m_value), m_unit(other.m_unit)
         {
             // void
         }