Merge remote-tracking branch 'curl/master' #1

Job	Run time
linux-mingw, AM gcc	2m 6s
cygwin, AM x86_64 openssl R	8m 22s
linux-mingw, CM gcc	1m 0s
cygwin, CM x86_64 openssl	7m 36s
msvc, CM x64-windows schannel MultiSSL U	46m 49s
msvc, CM x64-windows openssl	39m 34s
msvc, CM x64-uwp openssl	12m 35s
msys2, AM x86_64 !proxy	7m 40s
msvc, CM x64-windows libressl	18m 3s
msys2, AM x86_64 default	5m 27s
msvc, CM x64-windows boringssl	24m 20s
msys2, CM x86_64 default	6m 32s
msvc, CM x64-windows wolfssl	32m 14s
msys2, AM x86_64 default R	7m 10s
msvc, CM x64-windows mbedtls	33m 14s
mingw, AM x86_64 default	6m 47s
msvc, CM x64-windows msh3	33m 48s
mingw, AM x86_64 c-ares U	10m 0s
mingw, CM x86_64 schannel c-ares U	7m 9s
mingw, CM ucrt-x86_64 schannel R TrackMemory	2m 54s
old-mingw, CM 9.5.0-x86_64 schannel	10m 32s
mingw, CM clang-x86_64 openssl	2m 26s
old-mingw, CM 7.3.0-x86_64 schannel U	9m 12s
mingw, CM ucrt-x86_64 schannel uwp	2m 51s
old-mingw, CM 6.4.0-i686 schannel !unity	3m 15s
mingw, CM x86_64 schannel dev debug	2m 29s
mingw, CM i686 schannel R	2m 36s
	5h 46m 41s

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