Merge branch 'upstream-curl' into update-curl

Utilities/cmcurl/CMake/CurlTests.c

Utilities/cmcurl/CMake/OtherTests.cmake

Utilities/cmcurl/CMakeLists.txt

Utilities/cmcurl/COPYING

Utilities/cmcurl/include/curl/curl.h

Utilities/cmcurl/include/curl/curlbuild.h.cmake

Utilities/cmcurl/include/curl/curlrules.h

Utilities/cmcurl/include/curl/curlver.h

Utilities/cmcurl/include/curl/easy.h

Utilities/cmcurl/include/curl/mprintf.h

Utilities/cmcurl/include/curl/multi.h

Utilities/cmcurl/include/curl/stdcheaders.h

Utilities/cmcurl/include/curl/typecheck-gcc.h

Utilities/cmcurl/lib/Makefile.inc

Utilities/cmcurl/lib/amigaos.c

Utilities/cmcurl/lib/amigaos.h

Utilities/cmcurl/lib/arpa_telnet.h

Utilities/cmcurl/lib/asyn-ares.c

Utilities/cmcurl/lib/asyn-thread.c

Utilities/cmcurl/lib/asyn.h