Compiler-rt master won't build. Use 3.9 and, obviously, favor git

README.md

@@ -5,7 +5,8 @@
 ```shell
 # Get dependencies
 cd llvm/projects
-svn co http://llvm.org/svn/llvm-project/compiler-rt/trunk compiler-rt
+git pull https://github.com/llvm-mirror/compiler-rt
+git checkout release_39
 cd ../..
 
 # Build