examples: Don't call select() to sleep on windows

Windows does not support using select() for sleeping without a dummy
socket. Instead use Windows' Sleep() and sleep for 100ms which is t

examples: Don't call select() to sleep on windows

Windows does not support using select() for sleeping without a dummy
socket. Instead use Windows' Sleep() and sleep for 100ms which is the
minimum suggested value in the curl_multi_fdset() doc.

Prior to this change the multi examples would exit prematurely since
select() would error instead of sleeping when called without an fd.

Reported-by: Johan Lantz
Bug: http://curl.haxx.se/mail/lib-2014-11/0221.html

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examples: use do/while loop for multi examples

It's conceivable that after the first time curl_multi_perform returns,
the outvalue still_running will be 0, but work will have been done.

examples: use do/while loop for multi examples

It's conceivable that after the first time curl_multi_perform returns,
the outvalue still_running will be 0, but work will have been done. This
is shown by a workload of small, purely file:// based URLs. Ensure that
we always read pending messages off the multi handle by forcing the
while loop to run at least once.

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sources: update source headers

All C and H files now (should) feature the proper project curl source
code header, which includes basic info, a copyright statement and some
basic disc

sources: update source headers

All C and H files now (should) feature the proper project curl source
code header, which includes basic info, a copyright statement and some
basic disclaimers.

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examples: fix compiler warnings

examples: use example.com in example URLs

multi & hiper examples: updates and cleanups

all multi and hiper examples:

* don't loop curl_multi_perform calls, that was <7.20.0 style, currently
the exported multi function

multi & hiper examples: updates and cleanups

all multi and hiper examples:

* don't loop curl_multi_perform calls, that was <7.20.0 style, currently
the exported multi functions will not return CURLM_CALL_MULTI_PERFORM

all hiper examples:
* renamed check_run_count to check_multi_info
* don't compare current running handle count with previous value, this
was the wrong way to check for finished requests, simply call
curl_multi_info_read
* it's also safe to call curl_multi_remove_handle inside the
curl_multi_info_read loop.

ghiper.c:
* replaced curl_multi_socket (that function is marked as obsolete) calls
with curl_multi_socket_action calls (as in hiperfifo.c and
evhiperfifo.c)

ghiper.c and evhiperfifo.c:
* be smart as hiperfifo.c, don't do uncessary curl_multi_* calls in
new_conn and main

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examples: add curl_multi_timeout

Make the multi-interface using examples use curl_multi_timeout to
properly educate users how to do things.

test536: do not fail with threaded DNS resolver

Also tweaked comments in certain examples using curl_multi_fdset().

remove the CVSish $Id$ lines

docs/example patches for VMS

Fixed a surprising number of example programs that were passing int arguments
to curl_easy_setopt instead of long.

Michal Marek's cleanup of how curl_easy_setopt() is used in examples and
test code. Thanks to his curl_easy_setopt() typechecker work...

Added comments about checking return code and the maxfd counter

multi interface, debug callback