contrib: add ncurses

contrib/src/ncurses/SHA512SUMS

+d7c5e54b6d4d8b9211f0006ca8786f7609d180cc1aaebf4f25e7e35e12959779cf66447359a602daed625621ca32b0d910d67aef3eb8b6fdc3c373819a88faa1  ncurses-5.9.tar.gz

contrib/src/ncurses/rules.mak

+# ncurses
+
+NCURSES_VERSION := 5.9
+NCURSES_URL := $(GNU)/ncurses/ncurses-$(NCURSES_VERSION).tar.gz
+
+PKGS += ncurses
+
+ifeq ($(call need_pkg,"ncursesw"),)
+PKGS_FOUND += ncurses
+endif
+
+$(TARBALLS)/ncurses-$(NCURSES_VERSION).tar.gz:
+	$(call download,$(NCURSES_URL))
+
+.sum-ncurses: ncurses-$(NCURSES_VERSION).tar.gz
+
+ncurses: ncurses-$(NCURSES_VERSION).tar.gz .sum-ncurses
+	$(UNPACK)
+	$(MOVE)
+
+.ncurses: ncurses
+	cd $< && $(HOSTVARS) ./configure $(HOSTCONF) --without-debug --enable-widec --without-develop --without-shared --with-terminfo-dirs=/usr/share/terminfo
+	cd $</ncurses && make && make install
+	cd $</include && make && make install
+	touch $@