Add a set of tests for DRM locking, exposing issues on BSD.
diff --git a/.gitignore b/.gitignore
index 8ae98e8..0991da8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -57,6 +57,7 @@
 tests/getclient
 tests/getstats
 tests/getversion
+tests/lock
 tests/openclose
 tests/setversion
 tests/updatedraw