libsysio-commit

[Lee W. <le...@sa...>]

Applied diff sent by Eric Mei that fixed a problem during shutdown when
attempting to release all i-nodes.

Also, fixed a bug in open.c (reported by Eric Mei) with an unmatched
P_RELE. This involved a new i-node flag (immune) that when set, keeps
the garbage collector from trying to reclaim an i-node, without regard
to the number of soft refs.

		--Lee