example/crawler: make it use a few more options

For show, but reasonable

examples: make use of CURLOPT_(REDIR_|)PROTOCOLS_STR

To show how to use them

Closes #11334

example/crawler: also set CURLOPT_AUTOREFERER

Could make sense, and it was not used in any example before.

Closes #11283

copyright: update all copyright lines and remove year ranges

- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- save

copyright: update all copyright lines and remove year ranges

- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- saves us from pointless churn
- git keeps history for us
- the year range is kept in COPYING

checksrc is updated to allow non-year using copyright statements

Closes #10205

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examples/crawler.c: use the curl license

With permission from Jeroen Ooms

URL: https://github.com/curl/curl/pull/8869#issuecomment-1144742731
Closes #8950

src: Remove C99 constructs to ensure C89 compliance

This fixes the error: 'for' loop initial declaration used outside C99
mode by declaring the loop increment variable in the beginning o

src: Remove C99 constructs to ensure C89 compliance

This fixes the error: 'for' loop initial declaration used outside C99
mode by declaring the loop increment variable in the beginning of the
block instead of inside the for loop.

Fixes #5254
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>

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copyrights: fix copyright year range

.. because checksrc's copyright year check stopped working.

Ref: https://github.com/curl/curl/pull/4547

Closes https://github.com/curl/

copyrights: fix copyright year range

.. because checksrc's copyright year check stopped working.

Ref: https://github.com/curl/curl/pull/4547

Closes https://github.com/curl/curl/pull/4549

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examples/crawler: Fix the Accept-Encoding setting

- Pass an empty string to CURLOPT_ACCEPT_ENCODING to use the default
supported encodings.

Prior to this change the specific e

examples/crawler: Fix the Accept-Encoding setting

- Pass an empty string to CURLOPT_ACCEPT_ENCODING to use the default
supported encodings.

Prior to this change the specific encodings of gzip and deflate were set
but there's no guarantee they'd be supported by the user's libcurl.

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examples: Fix memory leaks from realloc errors

Make sure to not overwrite the reallocated pointer in realloc() calls
to avoid a memleak on memory errors.

examples/crawler.c: move #ifdef to column 0

Apparently the C => HTML converter on the web site doesn't quite like it
otherwise.

Reported-by: Jeroen Ooms

example/crawler.c: simple crawler based on libxml2

Closes #2706