add vbltest to .gitignore
diff --git a/.gitignore b/.gitignore
index 5f9c1fa..243457e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -75,3 +75,4 @@
 tests/modeprint/modeprint
 tests/modetest/modetest
 tests/kmstest/kmstest
+tests/vbltest/vbltest