Update to the LLVM 4.0 release branch

patches/clang-0002.patch

@@ -1,4 +1,4 @@
-From 4139cf38b1a16aa49a7b9eed79b0cccec1a70ec8 Mon Sep 17 00:00:00 2001
+From 553e9229258fd4127e35ad983217b7e4825fdfef Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Hugo=20Beauz=C3=A9e-Luyssen?= <hugo@beauzee.fr>
 Date: Mon, 2 May 2016 15:58:31 +0200
 Subject: [PATCH 2/4] Manually revert 0e2452f3055e2e2cad06a55c5ca9c2be13404781
@@ -9,11 +9,11 @@ This re-enables mingw detection
  1 file changed, 4 insertions(+), 10 deletions(-)
 
 diff --git a/lib/Driver/MinGWToolChain.cpp b/lib/Driver/MinGWToolChain.cpp
-index 938440b..a1dc25b 100644
+index e971869..1ac3bd3 100644
 --- a/lib/Driver/MinGWToolChain.cpp
 +++ b/lib/Driver/MinGWToolChain.cpp
-@@ -66,23 +66,17 @@ MinGW::MinGW(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
-     : ToolChain(D, Triple, Args) {
+@@ -64,23 +64,17 @@ MinGW::MinGW(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
+     : ToolChain(D, Triple, Args), CudaInstallation(D, Triple, Args) {
    getProgramPaths().push_back(getDriver().getInstalledDir());
  
 -// In Windows there aren't any standard install locations, we search