C++ and CINT disagree on the header for multimap/set.

git-svn-id: http://root.cern.ch/svn/root/trunk@42043 27541ba8-7e3a-0410-8455-c3a389f83636

core/metautils/src/multimap2Linkdef.h

+#ifdef __CINT__
 #include <multimap>
+#else
+#include <map>
+#endif
 #include <string>
 #ifndef __hpux
 using namespace std;

core/metautils/src/multimapLinkdef.h

+#ifdef __CINT__
 #include <multimap>
+#else
+#include <map>
+#endif
 #include <string>
 #ifndef __hpux
 using namespace std;

core/metautils/src/multisetLinkdef.h

+#ifdef __CINT__
 #include <multiset>
+#else
+#include <set>
+#endif
 #include <string>
 #ifndef __hpux
 using namespace std;