Prepare ROOT for enabling the dynamic scopes, responsible for parsing such 
constructs (eg:) :

$ cat dynscopes.C 
void dynscopes() {
  TFile* F = new TFile("tutorials/hsimple.root");
  hpx->GetName();
}
root[0] .x dynScopes.C

The only remaining part to be fixed is the build system and then we will be able
to turn that feature on by default.


git-svn-id: https://root.cern.ch/svn/root/trunk@48640 27541ba8-7e3a-0410-8455-c3a389f83636