Fix Makefile

Summary: These two files are test binaries and are not included in TESTS in Makefile.

Test Plan: `make clean` now deletes those files, too

Reviewers: sdong, kradhakrishnan, meyering

Reviewed By: kradhakrishnan, meyering

Subscribers: kradhakrishnan, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D36705

Makefile

@@ -246,6 +246,7 @@ TESTS = \
 	version_builder_test \
 	file_indexer_test \
 	write_batch_test \
+	write_batch_with_index_test \
 	write_controller_test\
 	deletefile_test \
 	table_test \