7.5.3

1. Fix - draw histograms with negative bins #276
2. Fix - correctly read TLeaf with fixed-size array
3. Fix - bug in options handling in startGUI()
4. Fix - greyscale support in TLegend drawing
5. Fix - correctly use text font for TGaxis title
6. Fix - preserve auto colors in THStack #277
7. Fix - correctly set pave name #278