This patch from Philippe implements the reading of variable size

array inside a TClonesArray when the TClonesArray is not split.
It also adds a test for reading variable size array inside a TClonesArray.
It also fixes a problem recently mentioned on roottalk where the formula
for not properly reading variable size array when the
variable size was indexed more there was more than one variable in the formula.


git-svn-id: http://root.cern.ch/svn/root/trunk@5037 27541ba8-7e3a-0410-8455-c3a389f83636