PRB nodes intermittently fail google.test with 'tcp connect failed:
Connection timed out' while www.google.com still answers ping and
www.wolfssl.com:443 (external.test) connects fine: Google drops or
throttles TCP connections from busy CI egress IPs, so the existing
ping reachability guard does not catch it.
Failing to even open the TCP connection exercises no wolfSSL code, so
treat it like the unreachable-server case and skip (77) instead of
failing. TLS-level failures still fail the test.
When compiling for QEMU, the gethostbyname call doesn't have access to
the OS DNS.
Implemented a lookup of hostname that uses the system command host.
Fix for QEMU Aarch64 where 'char' is unsigned and the -1 return is being
converted to 255 in wolfSSL_OPENSSL_hexchar2int().
Test TLSv1.3 with www.google.com if wolfSSL supports it.
CMAC: cannot cast size_t* to word32* when big-endian.
SP math all: Random prime - munge bits before moving them around for
big-endian.
BIO, no filesystem: Allow BIO_prinf to be used with mem BIO.