libcurl options for controlling what to get and how to receive posssibly
interleaved RTP data. Initial commit.

the code more curl-style

killing a sockfilter process the actual PID from the pid file is used and
not the one returned by open2() which might be different.

indicates that only one of the two possible sockfilter processes should be
killed.  Valid values for this parameter are 'main' and 'data'.

generates warning 'Use of uninitialized value in scalar assignment' with perl
versions older than 5.10

Adjust environment vars setting and restoring from test definition.

Avoid using strftime in torture sub.

identical names but different paths properly

  HTTP Cookie: header _needs_ to be sorted on the path length in the cases
  where two cookies using the same name are set more than once using
  (overlapping) paths. Realizing this, identically named cookies must be
  sorted correctly. But detecting only identically named cookies and take care
  of them individually is harder than just to blindly and unconditionally sort
  all cookies based on their path lengths. All major browsers also already do
  this, so this makes our behavior one step closer to them in the cookie area.

  Test case 8 was the only one that broke due to this change and I updated it
  accordingly.

pointed it out to me)

  again when downloading files over FTP using ASCII and it turns out that the
  final size of the file is not the same as the initial size the server
  reported. This is very common since servers don't take the newline
  conversions into account.

Add some debug messages to see what's going on with valgrind logs.

of messages atomic, on systems where an fwrite of a memory buffer is atomic.

different than the one specified in test definition for same server

  This will make tests 310 311 and 312 fail while fixing.

- Remove some debug messages

fix warnings

fix warnings

add some debug messages

use servername_id() from serverhelp.pm

refactored stopping of test harness servers

maketgz already converts this file to DOS style with an awk filter.

subroutines for ssh and socks test suite servers.

the <killserver> section of test harness definition files.

  being properly detected under certain circumstances. It had been caused by
  strange behavior of pkg-config when handling PKG_CONFIG_LIBDIR. pkg-config
  distinguishes among empty and non-existent environment variable in that case.