Merge branch 'upstream-curl' into update-curl

Utilities/cmcurl/CMake/CurlSymbolHiding.cmake

Utilities/cmcurl/CMake/FindNGHTTP2.cmake

Utilities/cmcurl/CMakeLists.txt

Utilities/cmcurl/include/curl/curl.h

Utilities/cmcurl/include/curl/curlver.h

Utilities/cmcurl/lib/CMakeLists.txt

Utilities/cmcurl/lib/Makefile.inc

Utilities/cmcurl/lib/amigaos.c

Utilities/cmcurl/lib/base64.c

Utilities/cmcurl/lib/conncache.c

Utilities/cmcurl/lib/connect.c

Utilities/cmcurl/lib/connect.h

Utilities/cmcurl/lib/cookie.c

Utilities/cmcurl/lib/cookie.h

Utilities/cmcurl/lib/curl_config.h.cmake

Utilities/cmcurl/lib/curl_ntlm_core.c

Utilities/cmcurl/lib/curl_sasl.c

Utilities/cmcurl/lib/curl_setup.h

Utilities/cmcurl/lib/curl_sspi.c

Utilities/cmcurl/lib/curlx.h