lib/oe/terminal.py: add support for MATE desktop terminals
A simple clone of the corresponding Gnome class. Without this, devshell
fails completely on a default installation of MATE desktop Linux Mint 15.
(From OE-Core master rev:
8cc078a9c679845464c59028f584d7aba098cc1f)
Signed-off-by: Andre McCurdy <andre.mccurdy@entropic.com>
Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
