Its better to use xterm since some folks may not be using gnome
or KDE. Chances of having xterm on build machines are lot more
than having gnome-terminal.
(From OE-Core rev: 6ba0dc5b075ab63d6c16fcb45928336a919cf070)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>