tests: Audit RZ abuse.

RZ succeeds if x is zero, and fails if x is nonzero, treating a
nonzero value as a error number as in errno(3) to print the message.

The following library routines instead re

tests: Audit RZ abuse.

RZ succeeds if x is zero, and fails if x is nonzero, treating a
nonzero value as a error number as in errno(3) to print the message.

The following library routines instead return -1 on failure and set
errno to the error code:

fuse_opt_add_arg
fuse_opt_add_opt
fuse_opt_add_opt_escaped
fuse_opt_insert_arg
lseek
system

So use RL instead for those -- succeeds if x is zero, and fails if x
is -1.

This shouldn't make any tests newly fail or newly succeed -- the
functions in question only ever return 0 or -1 -- but if the tests
were already failing anywhere, they will now fail with meaningful
messages.

TBD: dlinfo, which isn't fit for RL or RZ since it reports errors via
dlerror() rather than errno.

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fix typos in comments and one definition, mainly s/sucket/socket/.

Get rid of all the -lrumpdev and -lrumpvfs that are no longer needed
after moving rump's mainbus from rumpdev to rumpkern.

Produces the same atf-run results as before.

Don't play with "../.." in includes for h_macros.h; deal with it centrally.
Minor fixes.

Extra libs for rump.

t_fd/sigio: pass test if we receive at least one SIGIO signal.

While a real kernel collects these signals until the connect() returns and
then delivers one signal rump delivers every signal so we ge

t_fd/sigio: pass test if we receive at least one SIGIO signal.

While a real kernel collects these signals until the connect() returns and
then delivers one signal rump delivers every signal so we get more than one.

Ok: Antti Kantee <pooka@netbsd.org>

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As the sigio test case is currently failing with "sigcnt != 1", print the
actual sigcnt value to aid in diagnosing the problem.

Add a test that checks that the client receives SIGIO for an O_ASYNC
socket.

Add test which checks rumpclient does not use fds 0-2 for its
internal purposes.