vzctl set: introduce --ram and --swap

These are just an easy aliases for --physpages and --swappages,
the differences being:

1. There is a single argument -- the limit (the barrier is set to 0).
2. The argument is in bytes (with optional K/M/G/T suffix).

While at it, document PHYSPAGES and SWAPPAGES in ctid.conf(5).

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
5 files changed