devel/adacurses: work around FreeBSD 11 ncurses regression

The upgrade of ncurses on the -CURRENT version of FreeBSD resulted in an
regression (see PR) which results in multiple pkg-fallout mails to me
weekly.  Since the PR isn't moving despite periodic pinging, I am
forcing the ports version of ncurses to be used with FreeBSD 11 rather
than the base like FreeBSD 10 and earlier, and DragonFly.

While here, tweak a makefile install target that was emitting a non-fatal
error.

PR:	199109

devel/adacurses/Makefile

@@ -13,7 +13,7 @@ COMMENT=	Ada95 bindings for ncurses
 
 LICENSE=	MIT
 
-USES=		ada gmake ncurses tar:tgz
+USES=		ada gmake tar:tgz
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--with-ada-include=${PREFIX}/include/adacurses \
 		--with-ada-objects=${PREFIX}/lib/adacurses \
@@ -26,8 +26,19 @@ MAKE_JOBS_UNSAFE=	yes
 
 .include <bsd.port.options.mk>
 
+.if ${OPSYS} == FreeBSD && ${OSREL:R} == 11
+# PR 199109  The base ncurses has suffered a regression which prevents
+# adacurses from building on -CURRENT.  The PR is not getting any attention
+# and I'm sick of never-ending fallout messages so bring back ports ncurses
+# for the FreeBSD 11 users.
+USES+=	ncurses:port
+.else
+USES+=	ncurses
+.endif
+
 post-patch:
 	@${REINPLACE_CMD} -e 's|#if A|#ifdef A|g' ${WRKSRC}/gen/gen.c
+	@${REINPLACE_CMD} -e '/(INSTALL_PROG)/d' ${WRKSRC}/gen/Makefile.in
 
 post-install:
 	${INSTALL_SCRIPT} ${WRKSRC}/gen/adacurses-config \