Document QuaternionBase, minor doc improvements.

* Document class QuaternionBase so that docs for members are displayed.
* Remove obsolete \redstar refering to Array module
* Fix typo in Constants.h
* Document EIGEN_NO_AUTOMATIC_RESIZING

Eigen/src/Core/util/Constants.h

@@ -378,7 +378,7 @@ enum QRPreconditioners {
 #error The preprocessor symbol 'Success' is defined, possibly by the X11 header file X.h
 #endif
 
-/** \ingroups enums
+/** \ingroup enums
   * Enum for reporting the status of a computation. */
 enum ComputationInfo {
   /** Computation was successful. */
@@ -387,7 +387,7 @@ enum ComputationInfo {
   NumericalIssue = 1, 
   /** Iterative procedure did not converge. */
   NoConvergence = 2,
-  /** The inputs are invalid, or the algorithm has been properly called.
+  /** The inputs are invalid, or the algorithm has been improperly called.
     * When assertions are enabled, such errors trigger an assert. */
   InvalidInput = 3
 };

Eigen/src/Geometry/Quaternion.h

@@ -38,6 +38,12 @@ template<typename Other,
 struct quaternionbase_assign_impl;
 }
 
+/** \geometry_module \ingroup Geometry_Module
+  * \class QuaternionBase
+  * \brief Base class for quaternion expressions
+  * \tparam Derived derived type (CRTP)
+  * \sa class Quaternion
+  */
 template<class Derived>
 class QuaternionBase : public RotationBase<Derived, 3>
 {