lit: Set requireAndAnd config variable (currently unused).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81099 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/lit.cfg b/test/lit.cfg
index 3bd18dc..2375a43 100644
--- a/test/lit.cfg
+++ b/test/lit.cfg
@@ -10,3 +10,7 @@
 # The 'PATH' and 'SYSTEMROOT' variables will be set automatically from the lit
 # command line variables.
 environment = {}
+
+# requireAndAnd: Require '&&' between commands, until they get globally killed
+# and the test runner updated.
+requireAndAnd = True