[PATCH] Add segmented stack support for DragonFlyBSD

[Rafael Ávila de Espíndola]

LGTM with it clang-formated.


================
Comment at: include/llvm/ADT/Triple.h:380
@@ -379,1 +379,3 @@
 
+  bool isOSDragonFly() const {
+    return getOS() == Triple::DragonFly;
----------------
This fits in one line, no? Can you git-clang-format the patch?

http://reviews.llvm.org/D4705

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