Bug#843642: gnome-terminal: Scrolling with touchpad combines smooth and rough movement

[Tony Houghton]

In ROXTerm nearly all mouse events are passed through to the VteTerminal 
widget, except IIRC right-click for the popup menu and ctrl-double-click 
to open a URI. Now the same bug has been found in gnome-terminal there 
are at least 2 reasons to suspect the problem lies in vte. We should 
probably reassign and forward upstream (I can't seem to find an existing 
upstream report for this, but I've never been good at finding existing 
bug reports).