[doxygen] Add Valgrind to Doxygen documentation

doc/doxygen/Doxylocal

 # This file contains local changes to the doxygen configuration
 # please us '+=' to add file/directories to the lists
 
-EXCLUDE_PATTERNS       = */.svn/*
-
 PREDEFINED            += "NEW_PROP_TAG(name)=Property tag name" \
-                         "NEW_TYPE_TAG(name)=Type tag name"
+                         "NEW_TYPE_TAG(name)=Type tag name" \
+                         HAVE_VALGRIND:=1
 
 INPUT                 += @srcdir@/mainpage.txt \
                          @srcdir@/modules.txt \
@@ -30,5 +29,5 @@ CITE_BIB_FILES = @top_srcdir@/doc/handbook/dumux-handbook.bib
 # enable macro expansion only for specified macros
 MACRO_EXPANSION        = YES
 EXPAND_ONLY_PREDEF     = YES
-PREDEFINED             = "DUNE_DEPRECATED:=/** \deprecated */" \
+PREDEFINED             += "DUNE_DEPRECATED:=/** \deprecated */" \
                          "DUNE_DEPRECATED_MSG(A):=/** \deprecated A */"

dumux/common/valgrind.hh

@@ -80,7 +80,7 @@ inline bool Running()
  * \brief Make valgrind complain if the object occupied by an object
  *        is undefined.
  *
- * Please note that this does not check whether the destinations of
+ * \note This does not check whether the destinations of
  * the object's pointers or references are defined.
  *
  * \tparam T The type of the object which ought to be checked