the current design of the virtual mount system turned out to be less
than ideal in terms of both simplicity and robustness. since its
importance seems to be rather marginal at the moment, it is better to
first remove it in its entirety, and then, given sufficient interest,
re-implement and integrate it into the system.
With matching support in the tty/pty server, passing the syspid of
a child process should allow for child session initialization from
within a multi-threaded parent as part of a fork-less, native process
creation.
