added various logging info

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

should be used

now cause the resolve function to return NULL immediately

some bad thinking on my part.

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

when not using ares.

instead to make it easier to find/read

sessionhandle to make the duphandle() function work as supposed. Also tried
to start document functions the doxygen way (in the headers of the functions).
Can't make it work though...

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.

even such platforms?)

is now treated as an error by libcurl

concept, and added lib/README.curlx to explain details about it

such platforms that support large files.

file.