lguest: write more information to userspace about pending traps.

This is preparation for userspace handling MMIO and ioport accesses.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --cc drivers/lguest/core.c
Simple merge

diff --cc drivers/lguest/hypercalls.c
Simple merge

diff --cc drivers/lguest/lg.h
Simple merge

diff --cc drivers/lguest/lguest_user.c
Simple merge

diff --cc include/linux/lguest_launcher.h
Simple merge

diff --cc tools/lguest/lguest.c
Simple merge