New "configure" ncurses detection code #4431

Job	Run time
build-ubuntu-latest-full-featured-gcc	1m 7s
build-ubuntu-latest-full-featured-clang	1m 5s
build-ubuntu-latest-clang-analyzer	1m 15s
build-ubuntu-latest-gcc-static	55s
build-ubuntu-latest-minimal-clang	1m 9s
build-ubuntu-latest-minimal-gcc	50s
build-ubuntu-latest-pcp	28s
build-dragonflybsd-latest-gcc	2m 49s
build-freebsd-latest-clang	2m 55s
build-netbsd-latest-gcc	2m 48s
build-macos-latest-clang	38s
build-openbsd-latest-clang	2m 57s
build-ubuntu-latest-clang-sanitizer	1m 0s
build-solaris-latest-gcc	6m 6s
lint-pcp-config	3s
lint-whitespace	2s
	26m 7s

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