* Add Hyperplane::transform(Matrix/Transform)

* Fix compilations with gcc 3.4, ICC and doxygen
* Fix krazy directives (hopefully)

Eigen/src/Core/CwiseNullaryOp.h

@@ -234,7 +234,7 @@ MatrixBase<Derived>::Constant(const Scalar& value)
 
 template<typename Derived>
 bool MatrixBase<Derived>::isApproxToConstant
-(const Scalar& value, typename NumTraits<Scalar>::Real prec) const
+(const Scalar& value, RealScalar prec) const
 {
   for(int j = 0; j < cols(); j++)
     for(int i = 0; i < rows(); i++)
@@ -328,7 +328,7 @@ MatrixBase<Derived>::Zero()
   */
 template<typename Derived>
 bool MatrixBase<Derived>::isZero
-(typename NumTraits<Scalar>::Real prec) const
+(RealScalar prec) const
 {
   for(int j = 0; j < cols(); j++)
     for(int i = 0; i < rows(); i++)
@@ -425,7 +425,7 @@ MatrixBase<Derived>::Ones()
   */
 template<typename Derived>
 bool MatrixBase<Derived>::isOnes
-(typename NumTraits<Scalar>::Real prec) const
+(RealScalar prec) const
 {
   return isApproxToConstant(Scalar(1), prec);
 }
@@ -497,7 +497,7 @@ MatrixBase<Derived>::Identity()
   */
 template<typename Derived>
 bool MatrixBase<Derived>::isIdentity
-(typename NumTraits<Scalar>::Real prec) const
+(RealScalar prec) const
 {
   for(int j = 0; j < cols(); j++)
   {

Eigen/src/Core/DiagonalMatrix.h

@@ -108,7 +108,7 @@ MatrixBase<Derived>::asDiagonal() const
   */
 template<typename Derived>
 bool MatrixBase<Derived>::isDiagonal
-(typename NumTraits<Scalar>::Real prec) const
+(RealScalar prec) const
 {
   if(cols() != rows()) return false;
   RealScalar maxAbsOnDiagonal = static_cast<RealScalar>(-1);

Eigen/src/Core/Dot.h

@@ -177,8 +177,10 @@ struct ei_dot_impl<Derived1, Derived2, LinearVectorization, NoUnrolling>
     const int size = v1.size();
     const int packetSize = ei_packet_traits<Scalar>::size;
     const int alignedSize = (size/packetSize)*packetSize;
-    const int alignment1 = (Derived1::Flags & AlignedBit) ? Aligned : Unaligned;
-    const int alignment2 = (Derived2::Flags & AlignedBit) ? Aligned : Unaligned;
+    enum {
+      alignment1 = (Derived1::Flags & AlignedBit) ? Aligned : Unaligned,
+      alignment2 = (Derived2::Flags & AlignedBit) ? Aligned : Unaligned
+    };
     Scalar res;
 
     // do the vectorizable part of the sum

Eigen/src/Core/Sum.h

@@ -195,8 +195,10 @@ struct ei_sum_impl<Derived, LinearVectorization, NoUnrolling>
                            || !(Derived::Flags & DirectAccessBit)
                            ? 0
                            : ei_alignmentOffset(&mat.const_cast_derived().coeffRef(0), size);
-    const int alignment = (Derived::Flags & DirectAccessBit) || (Derived::Flags & AlignedBit)
-                        ? Aligned : Unaligned;
+    enum {
+      alignment = (Derived::Flags & DirectAccessBit) || (Derived::Flags & AlignedBit)
+                ? Aligned : Unaligned
+    };
     const int alignedSize = ((size-alignedStart)/packetSize)*packetSize;
     const int alignedEnd = alignedStart + alignedSize;
     Scalar res;

Eigen/src/Core/util/Constants.h

@@ -28,7 +28,7 @@
 
 const int Dynamic = 10000;
 
-/** \defgroup flags
+/** \defgroup flags flags
   * \ingroup Core_Module
   *
   * These are the possible bits which can be OR'ed to constitute the flags of a matrix or