Updates to Windows CI build #57

Job	Run time
build-autoconf (ubuntu-latest)	8m 30s
build-cmake-unix (macos-latest, cmake)	7m 56s
build-cmake-unix (macos-latest, autoconf)	11m 18s
build-autoconf (macos-latest)	4m 39s
build-autoconf-windows	1m 46s
build-cmake-unix (ubuntu-latest, cmake)	18m 17s
build-cmake-windows (shared, ON, OFF)	12m 27s
build-cmake-windows (static, OFF, ON)	15m 20s
build-cmake-unix (ubuntu-latest, autoconf)	16m 57s
	1h 37m 10s

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