This set of patches helps to use qemu-linux-user in a chrooted environment.
It mostly allows to define the default cpu model as we can't use '-cpu'
argument.
The last one defines enviromnent variables to be able to use log file and
gdb server ('-d' and '-g' arguments).
[PATCH 1/4] linux-user: define default cpu model in configure instead of
linux-user/main.c
[PATCH 2/4] linux-user: specify the cpu model during configure
[PATCH 3/4] linux-user,m68k: display default cpu
[PATCH 4/4] linux-user: define new environment variables
