Fixed some compilation problems with nvcc + clang

Eigen/src/Core/util/Memory.h

diff --git a/Eigen/src/Core/util/Memory.h b/Eigen/src/Core/util/Memory.h
index 823e077..415bc48 100644
--- a/Eigen/src/Core/util/Memory.h
+++ b/Eigen/src/Core/util/Memory.h
@@ -526,9 +526,9 @@
 template<int Alignment, typename Scalar, typename Index>
 EIGEN_DEVICE_FUNC inline Index first_aligned(const Scalar* array, Index size)
 {
-  static const Index ScalarSize = sizeof(Scalar);
-  static const Index AlignmentSize = Alignment / ScalarSize;
-  static const Index AlignmentMask = AlignmentSize-1;
+  const Index ScalarSize = sizeof(Scalar);
+  const Index AlignmentSize = Alignment / ScalarSize;
+  const Index AlignmentMask = AlignmentSize-1;
 
   if(AlignmentSize<=1)
   {

unsupported/Eigen/CXX11/src/Tensor/TensorReduction.h

diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorReduction.h b/unsupported/Eigen/CXX11/src/Tensor/TensorReduction.h
index 09ee0c2..7a5dfbf 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorReduction.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorReduction.h
@@ -346,7 +346,7 @@
   static const bool HasOptimizedImplementation = false;
 
   static void run(const Self&, Op&, const Device&, typename Self::CoeffReturnType*, typename Self::Index, typename Self::Index) {
-    assert(false && "Not implemented");
+    eigen_assert(false && "Not implemented");
   }
 };
 
@@ -356,7 +356,7 @@
   static const bool HasOptimizedImplementation = false;
 
   static void run(const Self&, Op&, const Device&, typename Self::CoeffReturnType*, typename Self::Index, typename Self::Index) {
-    assert(false && "Not implemented");
+    eigen_assert(false && "Not implemented");
   }
 };