algo/tests/Makefile: portable sed usage

-i option should be put before the filenames in FreeBSD sed.

algo/tests/Makefile

@@ -85,14 +85,14 @@ shouldvdj_with_rc_merged:
 # When the global test suite is passing, individual failed tests (counted in SHOULD_*_EXPECTED_FAILS)
 # can be marked as 'TODO' to make continuous integration happy
 mark_failed_tests_as_todo:
-	sed -i "s/^\(not ok [0-9]*\) /\1 # TODO ##/" */*.tap
+	sed "s/^\(not ok [0-9]*\) /\1 # TODO ##/" -i */*.tap
 
 curatedvdj_archive: curated-vdj.zip
 curated-vdj.zip: $(SHOULD_VDJ_ARCHIVE)
 	$(eval tmpdir := $(shell mktemp -d))
 	mkdir $(tmpdir)/curated-vdj
 	cp --preserve $(SHOULD_VDJ_ARCHIVE) $(tmpdir)/curated-vdj
-	sed -ri 's/\s*BUG//' $(tmpdir)/curated-vdj/*
+	sed -r 's/\s*BUG//' -i $(tmpdir)/curated-vdj/*
 	for file in $(tmpdir)/curated-vdj/*; do mv $$file `echo $$file | sed 's/should/curated/'`; done
 	cwd=`pwd` && cd $(tmpdir) && zip $$cwd/$@ curated-vdj/*
 	rm -rf $(tmpdir)