chunked transfer work

The chunked transfer upload never stopped due to a silly add before we checked
for >0!

We now check if the chunked transfer-encoding header has been added "by force"
and if so, we enabled the chunky upload!

with --disable-ipv6 --without-zlib

FOLLOWLOCATION and CURLOPT_USERPWD.

for freeing single dns cache entries

for storage and retrieval of private data in the curl handle.

is not a good thing, as recent gccs for example complain if it is /usr/include

Right now, we just output "" until we think of something better.

CURLE_OPERATION_TIMEOUTED

until the pointers are set to another value

ConnectBits where the other bools already are

AGGRESIVE_TEST is also defined, as an addition to MALLOCDEBUG. It doesn't
work for multi interface usage and should only be used with careful
consideration.

should be removed soonish.