Initial fixes for bug #85.

Renamed meta_{true|false} to {true|false}_type, meta_if to conditional, is_same_type to is_same, un{ref|pointer|const} to remove_{reference|pointer|const} and makeconst to add_const.
Changed boolean type 'ret' member to 'value'.
Changed 'ret' members refering to types to 'type'.
Adapted all code occurences.

Eigen/src/Householder/HouseholderSequence.h

@@ -123,9 +123,9 @@ template<typename VectorsType, typename CoeffsType, int Side> class HouseholderS
 
     typedef HouseholderSequence<
       VectorsType,
-      typename internal::meta_if<NumTraits<Scalar>::IsComplex,
+      typename internal::conditional<NumTraits<Scalar>::IsComplex,
         typename internal::cleantype<typename CoeffsType::ConjugateReturnType>::type,
-        CoeffsType>::ret,
+        CoeffsType>::type,
       Side
     > ConjugateReturnType;
 
@@ -167,7 +167,7 @@ template<typename VectorsType, typename CoeffsType, int Side> class HouseholderS
       // FIXME find a way to pass this temporary if the user want to
       Matrix<Scalar, DestType::RowsAtCompileTime, 1,
              AutoAlign|ColMajor, DestType::MaxRowsAtCompileTime, 1> temp(rows());
-      if(    internal::is_same_type<typename internal::cleantype<VectorsType>::type,DestType>::ret
+      if(    internal::is_same<typename internal::cleantype<VectorsType>::type,DestType>::value
           && internal::extract_data(dst) == internal::extract_data(m_vectors))
       {
         // in-place