Merge branch 'collectd-5.6' into collectd-5.7

diff --cc src/apache.c
Simple merge

diff --cc src/ascent.c
Simple merge

diff --cc src/bind.c
Simple merge

diff --cc src/curl.c
Simple merge

diff --cc src/curl_json.c
Simple merge

diff --cc src/curl_xml.c
Simple merge

diff --cc src/nginx.c
Simple merge

diff --cc src/write_http.c
Simple merge