Build MinGW and MSYS2 toolchains #118

Job	Run time
mingw-w64-cross-headers	6m 28s
mingw-w64-cross-headers	6m 28s
mingw-w64-cross-binutils	36m 58s
mingw-w64-cross-binutils	36m 58s
mingw-w64-cross-gcc-stage1	51m 59s
mingw-w64-cross-gcc-stage1	51m 59s
mingw-w64-cross-crt	9m 55s
mingw-w64-cross-crt	9m 55s
mingw-w64-cross-windows-default-manifest	2m 28s
mingw-w64-cross-windows-default-manifest	2m 28s
mingw-w64-cross-winpthreads	3m 34s
mingw-w64-cross-winpthreads	3m 34s
mingw-w64-cross-gcc	1m 25s
mingw-w64-cross-gcc	1m 2s
repository	0s
repository	0s
deploy	0s
deploy	0s
check-repository	0s
check-repository	0s
	3h 45m 11s

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