New "configure" ncurses detection code #4434

Job	Run time
build-macos-latest-clang	46s
build-dragonflybsd-latest-gcc	2m 49s
build-freebsd-latest-clang	3m 18s
build-netbsd-latest-gcc	3m 10s
build-openbsd-latest-clang	3m 18s
build-solaris-latest-gcc	6m 53s
build-ubuntu-latest-clang-analyzer	1m 12s
build-ubuntu-latest-clang-sanitizer	1m 7s
build-ubuntu-latest-full-featured-clang	1m 2s
build-ubuntu-latest-gcc-static	58s
build-ubuntu-latest-full-featured-gcc	49s
build-ubuntu-latest-minimal-clang	1m 5s
build-ubuntu-latest-minimal-gcc	39s
build-ubuntu-latest-pcp	25s
lint-pcp-config	3s
lint-whitespace	2s
	27m 36s

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