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

such platforms that support large files.

file.

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

time to restructure this source file!

Good enough?

re-use these sources and functions for subsecond resolution timing

Robin Kay pointed this out.

* bring back subsecond resolution to CURLINFO_TOTAL_TIME
* Fix the Curl_pgrsDone() so that the final progress update is shown properly

directory. The provided ares dir is probably up-to-date, but more importantly
it is often not built yet at the time when this configure script runs.

that we use a library that is recent enough to build with the latest libcurl.

from a name resolve. Without this, we leak memory!

existance of NI_WITHSCOPEID since some platforms have that define but still
can't function with it set.