clang support for Bitrig (an OpenBSD fork); patch by David Hill.

llvm-svn: 161546
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 012d79f..87d533d 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -1776,6 +1776,9 @@
     case llvm::Triple::OpenBSD:
       TC = new toolchains::OpenBSD(*this, Target, Args);
       break;
+    case llvm::Triple::Bitrig:
+      TC = new toolchains::Bitrig(*this, Target, Args);
+      break;
     case llvm::Triple::NetBSD:
       TC = new toolchains::NetBSD(*this, Target, Args);
       break;