Best experience with Thinkpad suspend/resume

[isdtor]

T530 2392AQU here, 10.1 r275083, amd64. Suspend/resume does not work
all, but I suspect the mate power manager (that said, Mate is miles
more stable for me than gnome2 - good riddance, although I'm ever so
slightly annoyed at the disappearance of gdm2).

I tried to drop in iwn(4) from head, but it doesn't build, due to
IFCOUNTER_OPACKETS undefined. Don't know if I need anything from head
for modules/iwnfw either (this machine has an Intel Centrino
Advanced-N 6205 adapter).
Optimus support is also on my TOTRY list.