7.5.2

1. Fix - proper fit pars display in stats, proper #chi^{2}
2. Fix - several bugs in TFormula parsing
3. Fix - correctly use saved buffer in TF1/TF2
4. Fix - properly adjust size of stats box
5. Fix - support "pol0".."pol9" functions
6. Fix - TGraph bar width should be at least 1 pixel
7. Fix - prevent drawing of empty TGraph