DragonFly ToolChain definition for driver.
 - Patch by Alex Hornung!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70635 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
index 6f75d3e..8df64ea 100644
--- a/lib/Driver/Driver.cpp
+++ b/lib/Driver/Driver.cpp
@@ -1169,7 +1169,10 @@
   if (memcmp(&OS[0], "freebsd", 7) == 0)
     return createFreeBSDHostInfo(*this, Arch.c_str(), Platform.c_str(), 
                                  OS.c_str());
-    
+  if (memcmp(&OS[0], "dragonfly", 9) == 0)
+    return createDragonFlyHostInfo(*this, Arch.c_str(), Platform.c_str(),
+                                 OS.c_str());    
+
   return createUnknownHostInfo(*this, Arch.c_str(), Platform.c_str(), 
                                OS.c_str());
 }