New "configure" ncurses detection code #4459

Job	Run time
build-netbsd-latest-gcc	2m 59s
build-dragonflybsd-latest-gcc	2m 50s
build-macos-latest-clang	39s
build-freebsd-latest-clang	3m 7s
build-openbsd-latest-clang	3m 14s
build-solaris-latest-gcc	5m 31s
build-ubuntu-latest-clang-analyzer	1m 13s
build-ubuntu-latest-clang-sanitizer	1m 9s
build-ubuntu-latest-full-featured-clang	1m 10s
build-ubuntu-latest-full-featured-gcc	53s
build-ubuntu-latest-gcc-static	51s
build-ubuntu-latest-minimal-gcc	40s
build-ubuntu-latest-minimal-clang	1m 0s
build-ubuntu-latest-pcp	25s
lint-pcp-config	6s
lint-whitespace	2s
	25m 49s

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