Replaced addDir(const DirDef *dd) by addDir(DirDef *const dd) in GroupDef and GropuDefImpl.

Required as the list type the directories are added to has pointers to non-const DirDef as value type.

(cherry picked from commit be6f072)

Author: dhebbeker

src/groupdef.cpp

@@ -64,7 +64,7 @@ class GroupDefImpl : public DefinitionImpl, public GroupDef
     virtual void addGroup(const GroupDef *def);
     virtual void addPage(PageDef *def);
     virtual void addExample(const PageDef *def);
-    virtual void addDir(const DirDef *dd);
+    virtual void addDir(DirDef *const dd);
     virtual bool insertMember(MemberDef *def,bool docOnly=FALSE);
     virtual void removeMember(MemberDef *md);
     virtual bool findGroup(const GroupDef *def) const; // true if def is a subgroup of this group
@@ -327,7 +327,7 @@ bool GroupDefImpl::addNamespace(const NamespaceDef *def)
   return FALSE;
 }
 
-void GroupDefImpl::addDir(const DirDef *def)
+void GroupDefImpl::addDir(DirDef *const def)
 {
   if (def->isHidden()) return;
   if (Config_getBool(SORT_BRIEF_DOCS))

src/groupdef.h

@@ -62,7 +62,7 @@ class GroupDef : virtual public Definition
     virtual void addGroup(const GroupDef *def) = 0;
     virtual void addPage(PageDef *def) = 0;
     virtual void addExample(const PageDef *def) = 0;
-    virtual void addDir(const DirDef *dd) = 0;
+    virtual void addDir(DirDef *const dd) = 0;
     virtual bool insertMember(MemberDef *def,bool docOnly=FALSE) = 0;
     virtual void removeMember(MemberDef *md) = 0;
     virtual bool findGroup(const GroupDef *def) const = 0;