Added more atomic read/modify/write tests.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@7582 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/exp-drd/tests/tc07_hbl1.vgtest b/exp-drd/tests/tc07_hbl1.vgtest
new file mode 100644
index 0000000..71c463f
--- /dev/null
+++ b/exp-drd/tests/tc07_hbl1.vgtest
@@ -0,0 +1 @@
+prog: tc07_hbl1