Allow SSL TAP tests to run on Windows

Windows does not enforce key file permissions checks in libpq, and psql
can produce CRLF line endings on Windows.

Backpatch to Release 12 (CRLF) and Release 11 (permissions check)

src/test/ssl/t/001_ssltests.pl

@@ -324,8 +324,8 @@ command_like(
 		"$common_connstr sslrootcert=invalid", '-c',
 		"SELECT * FROM pg_stat_ssl WHERE pid = pg_backend_pid()"
 	],
-	qr{^pid,ssl,version,cipher,bits,compression,client_dn,client_serial,issuer_dn\n
-				^\d+,t,TLSv[\d.]+,[\w-]+,\d+,f,_null_,_null_,_null_$}mx,
+	qr{^pid,ssl,version,cipher,bits,compression,client_dn,client_serial,issuer_dn\r?\n
+				^\d+,t,TLSv[\d.]+,[\w-]+,\d+,f,_null_,_null_,_null_\r?$}mx,
 	'pg_stat_ssl view without client certificate');
 
 ### Server-side tests.
@@ -365,16 +365,21 @@ command_like(
 		'-c',
 		"SELECT * FROM pg_stat_ssl WHERE pid = pg_backend_pid()"
 	],
-	qr{^pid,ssl,version,cipher,bits,compression,client_dn,client_serial,issuer_dn\n
-				^\d+,t,TLSv[\d.]+,[\w-]+,\d+,f,/CN=ssltestuser,1,\Q/CN=Test CA for PostgreSQL SSL regression test client certs\E$}mx,
+	qr{^pid,ssl,version,cipher,bits,compression,client_dn,client_serial,issuer_dn\r?\n
+				^\d+,t,TLSv[\d.]+,[\w-]+,\d+,f,/CN=ssltestuser,1,\Q/CN=Test CA for PostgreSQL SSL regression test client certs\E\r?$}mx,
 	'pg_stat_ssl with client certificate');
 
 # client key with wrong permissions
-test_connect_fails(
+SKIP:
+{
+	skip "Permissions check not enforced on Windows", 2 if ($windows_os);
+
+	test_connect_fails(
 		$common_connstr,
 		"user=ssltestuser sslcert=ssl/client.crt sslkey=ssl/client_wrongperms_tmp.key",
 		qr!\Qprivate key file "ssl/client_wrongperms_tmp.key" has group or world access\E!,
 		"certificate authorization fails because of file permissions");
+}
 
 # client cert belonging to another user
 test_connect_fails(