to re-use a connection that is closed when re-used and libcurl should then
make a new fresh connection and use instead

most 1.1 connections will be closed. The case where it gets closed anyway
is subject for a new separate test.

it actually will close. This is after all what HTTP 1.1 says a server should
do.

attached. And some cosmetic fixes.

the execution of the tests

added various logging info

display all logs and only logs with relevant data when a test fails and -p
is used.

in ftp.c", but it shows no leaking.

when -p is used. For easier bug-hunting of autobuild failures. This still
only shows what files that are present in log/, as I believe we need to
filter which files we show on a failure.

is now treated as an error by libcurl

with Digest or NTLM. libcurl will now use HEAD to negotiate the authentication
and when done perform the requested POST.

sets the "swsbounce" magic mode. If there follows a request for the SAME
test number and the SAME part number, this mode will make the server bump
the part number internally and thus return a different <dataNUM> section
than it otherwise would.

Test case 153 uses this in case you need an example. It is pretty involved
and hard-to-use, but then the situation is pretty special over all. Enjoy.

when set.

testing so that all test files are build first properly. David Byron reported.

Andrés García helped out!

while perl often is installed in /usr/local/bin or elsewhere

chdir to absolute directory names instead. (this flaw exists in the shell
version too)

portability. I put it in this directory instead of the root since I think
perhaps it makes more sense.

the external curl include dir.