Solaris cannot cast a rev_it to a const_rev_it; make the collection const

git-svn-id: http://root.cern.ch/svn/root/trunk@22815 27541ba8-7e3a-0410-8455-c3a389f83636

cint/reflex/inc/Reflex/internal/InternalTools.h

@@ -35,12 +35,12 @@ namespace Reflex {
 
          template < typename CONT > 
          static typename std::vector<TO>::const_reverse_iterator RBegin( const CONT & cont ) {
-            return ((typename std::vector<TO> &)cont).rbegin();
+            return ((const typename std::vector<TO> &)cont).rbegin();
          }
 
          template < typename CONT >
          static typename std::vector<TO>::const_reverse_iterator REnd( const CONT & cont ) {
-            return ((typename std::vector<TO> &)cont).rend();
+            return ((const typename std::vector<TO> &)cont).rend();
          }
 
       };