qterminal source provenance

[Andrew Janke]

Hi, Octave maintainers,

Where does the source code in octave/libgui/qterminal come from? I've 
been googling around for a QTerminal project, and I only found these:

https://github.com/lxqt/qterminal
https://github.com/lxqt/qtermwidget
http://qterminal.sourceforge.net/

None of which quite match. The source file list looks similar to what's 
now in qtermwidget.

Is this a copy of an older version of qterminal? Or am I just not 
finding the project correctly?

Cheers,
Andrew