minc-leash: Fix to sort the option order
minc-leash: Fix to sort the option order

Since the capsh implementation has a problem that
it applies setuid/setgid/chroot as same order as
given options.

This simply causes an error if "--uid=1000 --chroot=/var"
is given because normal user can not execute chroot.

To avoid this buggy behavior, sort the --uid --gid and
--chroot.

mhiramat/mincs