Acked-by: Timo Stark <t.stark@nginx.com>
[ Remove trailing '.' from subject line - Andrew ]
Signed-off-by: Andrew Clayton <a.clayton@nginx.com>

Python applications are used only to generate responses here and can be
replaced by applications written in any other language.  While the
"_python" prefix is used to indicate that the file contains tests
specific to the Python module.

These tests cause router crash when run with AddressSanitizer:

=================================================================
==77196==ERROR: AddressSanitizer: heap-use-after-free on address 0x60c000079340 at pc 0x55d56b132d4b bp 0x7f8cc7f346b0 sp 0x7f8cc7f346a0
READ of size 1 at 0x60c000079340 thread T1
    #0 0x55d56b132d4a in nxt_openssl_conn_io_shutdown src/nxt_openssl.c:1466
    #1 0x55d56b0f6a25 in nxt_h1p_closing src/nxt_h1proto.c:2069
    #2 0x55d56b1009a6 in nxt_h1p_shutdown src/nxt_h1proto.c:2038
    #3 0x55d56b1014c3 in nxt_h1p_request_close src/nxt_h1proto.c:1718
    #4 0x55d56b1045c0 in nxt_http_request_close_handler src/nxt_http_request.c:864
    #5 0x55d56b104988 in nxt_http_request_done src/nxt_http_request.c:795
    #6 0x55d56b0ba0c3 in nxt_event_engine_start src/nxt_event_engine.c:542
    #7 0x55d56b0dcac2 in nxt_router_thread_start src/nxt_router.c:3645
    #8 0x55d56b0b421b in nxt_thread_trampoline src/nxt_thread.c:126
    #9 0x7f8ccab95ac2  (/lib/x86_64-linux-gnu/libc.so.6+0x94ac2)
    #10 0x7f8ccac2784f  (/lib/x86_64-linux-gnu/libc.so.6+0x12684f)

This flag is necessary to either run or skip certain tests that have
specific behavior depending on whether AddressSanitizer is enabled.

For instance, some tests may fail only when the binary is compiled
with AddressSanitizer.

It can fail with reporting following alert:

[alert] 137462#137462 mount("none", "/tmp/unit-test-636e0uh8/proc", "proc", 2097162, "") (16: Device or resource busy)

@filiphanes requested support for bytearray
and memoryview in the request body here:
<https://github.com/nginx/unit/issues/648>

This patch implements bytearray body support only.
Memoryview body still need to be implemented.

* Take options as well as requestListener

Unit-http have not kept up with the signature of nodejs's http package
development. Nodejs allows an optional `options` object to be passed to
the `createServer` function, we didn't. This resulted in function
signature errors when user code that did make use of the options arg
tried to call unit's replaced function.

This change changes the signature to be more in line with how nodejs
does it discarding it and printing a message to stdout.

* Add test file to start node application with options

* Add changes to docs/changes.xml

Closes: https://github.com/nginx/unit/issues/1043

Conditional access logging was introduced here:
https://github.com/nginx/unit/commit/4c91bebb50d06b28e369d68b23022caa072cf62d

According to the Node.js documenation this variable
should only include numbering scheme.

Thanks to @dbit-xia.

Closes: https://github.com/nginx/unit/issues/1085