t_setrlimit: Adjust resource limit to 20M

With ASLR enabled by default, RLIMIT_STACK test fails due to the fact
that default stack gap can be as big as 15M. Because of that the
resource limit of 4M

t_setrlimit: Adjust resource limit to 20M

With ASLR enabled by default, RLIMIT_STACK test fails due to the fact
that default stack gap can be as big as 15M. Because of that the
resource limit of 4M results in test program receiving SIGSEGV
immediately after exiting the setrlimit syscall. Since the idea of this
test is to check if rlim_cur does not extend past rlim_max, adjusting
the resource limit to 20M should not invalidate the test results.

Obtained from: Semihalf
Sponsored by: Alstom Group
Differential revision: https://reviews.freebsd.org/D33116

(cherry picked from commit 4f741801d86089a1c5d631ba1e0f1421cdcf7a7e)

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netbsd-tests: Fix the libc stat_socket test

The test tries to connect a socket to a closed port at 127.0.0.1. It
sets O_NONBLOCK on the socket first and expects to get EINPROGRESS from
connect(2),

netbsd-tests: Fix the libc stat_socket test

The test tries to connect a socket to a closed port at 127.0.0.1. It
sets O_NONBLOCK on the socket first and expects to get EINPROGRESS from
connect(2), but this is not guaranteed, ECONNREFUSED is possible.
Handle both cases, and re-enable the test.

PR: 240621
Sponsored by: The FreeBSD Foundation

(cherry picked from commit 95c75073d3d1ca9dcae41784453172f199bb2c0f)

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