warnings) in OpenSSL 1.1.0 and avoid _free()ing NULL references.



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  *) mod_http2: not counting file buckets again stream max buffer limits. 
     Effectively transfering static files in one step from slave to master 
     connection. [Stefan Eissing]



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mod_http2: aplogno tags, more unified log formatting



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mod_http2: facilitate slave connection reuse by comforting ap_check_pipeline.



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mod_http2: rework of stream states and cleanup handling.



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(If we remove the virtual_script stuff, remove Jim from this CHANGES entry)


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Also fix up a couple typos.

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Neither of the following makes sense:
- ProxyFCGISetEnvIf cond !VARIABLE value
- ProxyFCGISetEnvIf cond !

Error out in these cases. Also, don't execute the (unused) replacement
expression when unsetting.

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Add syntax highlight + change separator in regex (# --> |) in order to please syntax highlighting engine

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As pointed out by Mark Brooks in the site comments.

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In bugzilla and users@ we keep receiving questions about
how to test the new restrictions imposed by HttpProtocolOptions.
Added some info about how to use openssl s_client properly
and the mod_dumpio's directives to debug (thanks to
Daniel Ferradal for this suggestion).



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When using shared MPMs, `httpd -V` will perform a full configuration
check, which emits warnings when there is no defined ServerName.
Unfortunately the test suite does a -V check for every test section,
spamming the output with noise.

Work around this by just uncommenting the example ServerName in the test
config.

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seems like a steady stream of comments/questions in this area.



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