Adapt to Tensorflow 1.5

Signed-off-by: Vadim Markovtsev <vadim@sourced.tech>

labours.py

@@ -913,7 +913,11 @@ def train_embeddings(index, matrix, tmpdir, shard_size=IDEAL_SHARD_SIZE):
         swivel.FLAGS.output_base_path = tmproot
         swivel.FLAGS.loss_multiplier = 1.0 / shard_size
         swivel.FLAGS.num_epochs = num_epochs
+        # Tensorflow 1.5 parses sys.argv unconditionally *applause*
+        argv_backup = sys.argv[1:]
+        del sys.argv[1:]
         swivel.main(None)
+        sys.argv.extend(argv_backup)
         print("Reading Swivel embeddings...")
         embeddings = []
         with open(os.path.join(tmproot, "row_embedding.tsv")) as frow: