Improve cleanup in case of initialization failure.

test hanging and actually is an indication that there's a condition that is
not being properly handled at some point in the library.

Remove a pair of braces and adjust indentation appropriately.

applies for asynch name resolves in general and not only ares

re-use connections (for pipelining) before the name resolving is done.

as well

'packages/EPM/curl.list.in seems to ignore the --datarootdir setting'

the single test applications' link and dependences, so that you easier can
override those from the command line when using make.

reading the (local) CA cert file to let users easier pinpoint the actual
problem. CURLE_SSL_CACERT_BADFILE (77) is the new libcurl error code.

the definitions for the return type and arguments types of functions
recv() and send().

stale by replacing loop counters with timeouts. In this way the
main loop of the test will be allowed to run up to 30 seconds on
any platform before aborting it.

(when the resoling isn't completede yet) and not confuse it with a simple
connection re-use (non-pipelined).

test hanging and actually is an indication that there's a condition that is
not being properly handled at some point in the library.

Loop counter limits might need to be further increased on false positives.

data is actually shown on screen. Like when you do 'curl -v host' with data
and debug info sent to the same terminal.

to verify winsock API availability.

using winsock or winsock2 API.