archivers/rpm4: drop db5 dependency

Remove db5 dependency which is marked expired and is not actually used.
rpm4 has its own bdb-ro engine, that doesn't require bdb.

PR:		284002
Obtained from:	Oleg Sidorkin <osidorkin@gmail.com>

archivers/rpm4/Makefile

@@ -14,8 +14,7 @@ LICENSE_FILE=	${WRKSRC}/COPYING
 
 BUILD_DEPENDS=	${LOCALBASE}/lib/libelf.so:devel/elfutils \
 		gsed:textproc/gsed
-LIB_DEPENDS=	libdb-5.3.so:databases/db5 \
-		libelf.so:devel/elfutils \
+LIB_DEPENDS=	libelf.so:devel/elfutils \
 		libgcrypt.so:security/libgcrypt \
 		libnss3.so:security/nss \
 		libpopt.so:devel/popt \
@@ -28,8 +27,8 @@ FLAVORS=		default noopenmp
 FLAVOR?=		${FLAVORS:[1]}
 noopenmp_PKGNAMESUFFIX=	4-noopenmp
 
-USES=		alias bdb cpe gmake iconv libarchive libtool lua pathfix \
-		pkgconfig readline shebangfix sqlite tar:bzip2
+USES=		alias cpe gmake iconv libarchive libtool lua pathfix pkgconfig \
+		readline shebangfix sqlite tar:bzip2
 USE_LDCONFIG=	yes
 
 SHEBANG_FILES=			scripts/brp-compress scripts/check-prereqs \
@@ -40,7 +39,8 @@ SHEBANG_FILES=			scripts/brp-compress scripts/check-prereqs \
 				scripts/rpm_macros_provides.sh
 GNU_CONFIGURE=			yes
 GNU_CONFIGURE_MANPREFIX=	${PREFIX}/share
-CONFIGURE_ARGS=			--enable-sqlite=yes \
+CONFIGURE_ARGS=			--enable-bdb-ro \
+				--enable-sqlite=yes \
 				--localstatedir=/var \
 				--sysconfdir=${PREFIX}/etc \
 				--with-popt-prefix="${LOCALBASE}" \
@@ -54,10 +54,8 @@ CONFIGURE_ENV=			LUA_CFLAGS=-I${LUA_INCDIR} \
 INSTALL_TARGET=			install-strip
 
 CPPFLAGS+=	-I${LOCALBASE}/include -I${LOCALBASE}/include/nspr \
-		-I${LOCALBASE}/include/nss/nss -I${BDB_INCLUDE_DIR} \
-		-I${LUA_INCDIR}
-LDFLAGS+=	-L${LOCALBASE}/lib -L${LOCALBASE}/lib/nss -L${BDB_LIB_DIR} \
-		-L${LUA_LIBDIR}
+		-I${LOCALBASE}/include/nss/nss -I${LUA_INCDIR}
+LDFLAGS+=	-L${LOCALBASE}/lib -L${LOCALBASE}/lib/nss -L${LUA_LIBDIR}
 
 CONFLICTS_INSTALL=	rpm2cpio rpm4 rpm4-noopenmp