Marking myself as release manager.

If anyone objects please let me know.

llvm-svn: 179212
diff --git a/llvm/CODE_OWNERS.TXT b/llvm/CODE_OWNERS.TXT
index 10bf071..47af699 100644
--- a/llvm/CODE_OWNERS.TXT
+++ b/llvm/CODE_OWNERS.TXT
@@ -128,4 +128,4 @@
 
 N: Bill Wendling
 E: wendling@apple.com
-D: libLTO & IR Linker
+D: libLTO, IR Linker, and Release Manager