Added a couple of includes to get this to compile on Sparc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16685 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Unix/Unix.h b/lib/System/Unix/Unix.h
index b9eff46..37bc53c 100644
--- a/lib/System/Unix/Unix.h
+++ b/lib/System/Unix/Unix.h
@@ -23,6 +23,7 @@
 #include <cstring>
 #include <cerrno>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <sys/param.h>
 #include <assert.h>
 #include <string>