Use the assert/writeln pipeline for the verbatim files

Author: wilzbach

posix.mak

@@ -704,9 +704,9 @@ phobos-prerelease-verbatim : ${PHOBOS_FILES} druntime-target \
 		$W/phobos-prerelease/index.verbatim
 $W/phobos-prerelease/index.verbatim : verbatim.ddoc \
 		$W/phobos-prerelease/object.verbatim \
-		$W/phobos-prerelease/mars.verbatim $G/changelog/next-version $(DMD)
+		$W/phobos-prerelease/mars.verbatim $G/changelog/next-version $(DMD) $(DDOC_BIN)
 	${MAKE} --directory=${PHOBOS_DIR} -f posix.mak html $(DDOC_VARS_PRERELEASE_VERBATIM) \
-	  DOC_OUTPUT_DIR=$W/phobos-prerelease-verbatim
+	  DOC_OUTPUT_DIR=$W/phobos-prerelease-verbatim DMD="$(abspath $(DDOC_BIN))"
 	$(call CHANGE_SUFFIX,html,verbatim,$W/phobos-prerelease-verbatim)
 	mv $W/phobos-prerelease-verbatim/* $(dir $@)
 	rm -r $W/phobos-prerelease-verbatim