auth on multiple hosts with follow-location

   encoding. [http://curl.haxx.se/dev/HTTP-PUT-stdin.txt] When the filter

   system mentioned above gets real, it'll be a piece of cake to add.

 * Pass a list of host name to libcurl to which we allow the user name and

   password to get sent to. Currently, it only get sent to the host name that

   the first URL uses (to prevent others from being able to read it), but this

   also prevents the authentication info from getting sent when following

   locations to legitimate other host names.

 * "Content-Encoding: compress/gzip/zlib" HTTP 1.1 clearly defines how to get

   and decode compressed documents. There is the zlib that is pretty good at

   decompressing stuff. This work was started in October 1999 but halted again