cmd: use large files flag in build options

Change-Id: If2b44ab7f822be5c97dd0460023cad3a2a573b0e
diff --git a/cmd/flags.go b/cmd/flags.go
index 51580a1..9f89d5f 100644
--- a/cmd/flags.go
+++ b/cmd/flags.go
@@ -64,6 +64,7 @@
 		ShardMax:         *shardLimit,
 		IndexDir:         *indexDir,
 		CTagsMustSucceed: *ctags,
+		LargeFiles:       largeFiles,
 	}
 	opts.SetDefaults()
 	return opts