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



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161546 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/InitHeaderSearch.cpp b/lib/Frontend/InitHeaderSearch.cpp
index 628487e..8178f7a 100644
--- a/lib/Frontend/InitHeaderSearch.cpp
+++ b/lib/Frontend/InitHeaderSearch.cpp
@@ -218,6 +218,7 @@
     case llvm::Triple::FreeBSD:
     case llvm::Triple::NetBSD:
     case llvm::Triple::OpenBSD:
+    case llvm::Triple::Bitrig:
       break;
     default:
       // FIXME: temporary hack: hard-coded paths.