* Some of the patches in patch #19034 - by Wolfgang W. (bender)
- outliner.patch - a small fix to make the outliner draw the last
line of the list, if the list is bigger than the window.
- scroll.patch - enables vertical scrolling in the buttons window in horizontal mode. Necessary if a panel is opened that
is higher than the buttons window.
* Also, fixed some messy comments in drivers code