frotz: patch CONFIG_DIR as well

srcpkgs/frotz/template

@@ -1,7 +1,7 @@
 # Template file for 'frotz'
 pkgname=frotz
 version=2.44
-revision=1
+revision=2
 build_style=gnu-makefile
 make_build_target="frotz dfrotz"
 make_install_target="install install_dumb"
@@ -20,6 +20,7 @@ pre_build() {
 		-e "s;^OPTS = .*;OPTS = $CFLAGS;" \
 		-e 's;^PREFIX = .*;PREFIX = /usr;' \
 		-e 's;^MAN_PREFIX = .*;MAN_PREFIX = /usr/share;' \
+		-e 's;^CONFIG_DIR = .*;CONFIG_DIR = /etc;' \
 		-e 's; $(PREFIX)/bin; $(DESTDIR)/$(PREFIX)/bin;' \
 		-e 's; $(MAN_PREFIX)/man; $(DESTDIR)/$(MAN_PREFIX)/man;' \
 		-e 's;\($(CC) -o $(BINNAME)$(EXTENSION)\);\1 $(LDFLAGS);' \