bettersupport for HTTP return codes 300-399

PUT resume things
progress meter modified for resume
POST/GET/Location adjustments

test case 31 and 32 were added

Resume is now done with a Content-Range header instead of a Range header if
the request isn't GET. Presumably, this is how it should be made.

minor output fix

Added -d that enables easier protocol/server debug overview (it invokes
the servers with their -v options)

added test 29 and 30, HTTP resume and partial download tests

The progess meter title get an extra output when a resumed transfer is
taking place

data->httpreq was not set properly

7.6

http upload resume

moved the symbols talk to the library part, updated slightly to match

Added a httpreq field in the main struct so that there's one field to check
for what HTTP request that is being used. The old bit-style fields are still
in there as well.

The check for that content-range is received must only be made if we requested
GET resume. Other resumes are upload-wise and don't care about this header
in the download stream

Made it possible to do "upload resume" over HTTP

7.6-pre4

timespent is now updated in every call to the progress meter update function

Rick's and Jeff's stuff

make the configure script die if select() or socket() is missing

Added Ingo Ralf Blum

use this function only once note added

modified the Curl_ConnectHTTPProxyTunnel proto

moved curl_read() and curl_write() to sendf.c

converted to use Curl_read() and Curl_write()

uses Curl_read() and Curl_write()
unfolded telwrite() instead of being a separate single function