*) mod_http2: field values (headers and trailers) are stripped of

  *) mod_http2: field values (headers and trailers) are stripped of
     leading/trailing whitespace (space +htab) before being processed
     or send in a response. This is compatible behaviour to HTTP/1.1
     parsers that strip incoming headers of such characters.
     [Stefan Eissing]

  - removed intermittent "H2HeaderStrictness" directive again.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1904777 13f79535-47bb-0310-9956-ffa450edef68