Add credit and release notes for r150307. By Kai Nacke.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154796 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CREDITS.TXT b/CREDITS.TXT
index 8287892..6c042d5 100644
--- a/CREDITS.TXT
+++ b/CREDITS.TXT
@@ -283,6 +283,10 @@
 E: scottm@aero.org
 D: Added STI Cell SPU backend.
 
+N: Kai Nacke
+E: kai@redstar.de
+D: Support for implicit TLS model used with MS VC runtime
+
 N: Takumi Nakamura
 E: geek4civic@gmail.com
 E: chapuni@hf.rim.or.jp