fix compiler warning: external declaration in primary source file

fix print formatting string directives

- When libcurl was doing a HTTP POST and the server would respond with
"Connection: close" and actually close the connection after the
response-body, libcurl could still have outstanding

- When libcurl was doing a HTTP POST and the server would respond with
"Connection: close" and actually close the connection after the
response-body, libcurl could still have outstanding data to send and it
would not properly notice this and stop sending. This caused weirdness and
sad faces. http://curl.haxx.se/bug/view.cgi?id=2080222

Note that there are still reasons to consider libcurl's behavior when
getting a >= 400 response code while sending data, as Craig Perras' note
"http upload: how to stop on error" specifies:
http://curl.haxx.se/mail/archive-2008-08/0138.html

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Added test case 1051 to test Location: following with PUT, as reported
by Ben Sutcliffe. The test when run manually shows a problem in curl,
but the test harness web server doesn't run the t

Added test case 1051 to test Location: following with PUT, as reported
by Ben Sutcliffe. The test when run manually shows a problem in curl,
but the test harness web server doesn't run the test correctly so it's
disabled for now.

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improve synchronization between test harness runtests.pl script
and test harness servers to minimize risk of false test failures.

http://curl.haxx.se/mail/lib-2008-04/0392.html

fix minor memory leak triggered upon test failure

Remove fflush() + fsync() previously introduced accelerated writing of
server input and response request files of the test harness sws server.

Reintroduce, for test # 1001, the <postchec

Remove fflush() + fsync() previously introduced accelerated writing of
server input and response request files of the test harness sws server.

Reintroduce, for test # 1001, the <postcheck> small delay. The delay is
needed even with the accelerated writing of server input and response
request files in test harness sws server.

http://curl.haxx.se/mail/lib-2008-04/0385.html

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accelerate the writing of server input and response request files
to disk, trying to defeat file and disk write-behind algorithms

header inclusion cleanup

refactor some code out to write_pidfile() in util.c

Use a long int data type to handle getpid() result

Fix buffer size specification.

Improve handling of boundary conditions for huge requests.

Minor variable type cleanups.

Disable "swsbounce" mode when the received request
isn't for the same test and part number.

proper initialization of httprequest, no longer zeroing out twice
the whole 150000+ bytes struct, and also removing an equally big
additional buffer for pipelining treatment.

improve request initialization for test harness HTTP server

Dmitry Kurochkin's test harness HTTP server pipelining fix fot test 530

Detect, log and avoid storing a request with a negative size.

Allow test server to handle binary POSTs.
Tests 35, 544 545 added: binary data POSTs.

also log error message string

On error, close "log/server.response"

If TCP_NODELAY is not defined we can't disable the Nagle algorithm

Disable the Nagle algorithm and send back responses in small chunks in an
attempt to force smaller bits to get read by clients.

Oops missing var

add debug messages for initialization failures

use macros ERRNO, SET_ERRNO(), SOCKERRNO and SET_SOCKERRNO() for errno handling