From Philippe:

This correct the support for nested collections.  Previously, those nested
collection were silently wrongly handled.
We now properly draw collections nested inside one collection (i.e. 2 levels
of variable size).  We explicitly do not support collection nested inside a
collection nested inside a collection (i.e. we can not support 3 levels of
variable size).  For those case, the user needs to use the script drawing
mechanism (or MakeProxy directly).

The nesting can be direct (vector<vector<classX> > or vector<vector<int> >)
or indirect vector<classX> which classX containing a vector<classY> or
vector<int>.


git-svn-id: http://root.cern.ch/svn/root/trunk@11188 27541ba8-7e3a-0410-8455-c3a389f83636