Added empty constructors to GlobalIterator and ConstGlobalIterator so that it is now possible to declare an iterator without having to actually fill it.
Added empty constructors to GlobalIterator and ConstGlobalIterator so that
it is now possible to declare an iterator without having to actually fill
it.



git-svn-id: 28d9401aa571d5108e51b194aae6f24ca5964c06@37161 8cc4aa7f-3514-0410-904f-f2cc9021211c

crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS