Add YAML parser to Support.

llvm-svn: 153977
diff --git a/llvm/test/YAMLParser/spec-09-25.data b/llvm/test/YAMLParser/spec-09-25.data
new file mode 100644
index 0000000..b15edb5
--- /dev/null
+++ b/llvm/test/YAMLParser/spec-09-25.data
@@ -0,0 +1,5 @@
+# RUN: yaml-bench -canonical %s
+
+| # Simple block scalar
+ literal
+ 	text