MSVC++ project files fixed, connecthost() compiler errors, ignore SIGPIPE,
support CURLOPT_HTTP_VERSION etc...

Renamed: the TimeCond type to curl_TimeCond

libcurl should use in its request

failf("%d") without the error as argument... it would always make a weird
number get output

HTTP procotols may allow

same name as common functions...

the pack_hostent() is only compiled if gethostbyname_r() isn't present.

for when gethostbyname() is used so that we have the memory of the struct
allocated. This turns out to be needed if the curl handled is passed between
threads on Windows and possibly other operating systems where we use that
function.

is once again running OK

instead entirely rely on the curl_formadd() function. The former one is
subject for removal in a future release.

we check for the error state before believing we are connected in IPv6
cases