Download and build the compiler-rt project.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154905 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/release/test-release.sh b/utils/release/test-release.sh
index ad1af5f..d2946d8 100755
--- a/utils/release/test-release.sh
+++ b/utils/release/test-release.sh
@@ -18,7 +18,7 @@
     MAKE=make
 fi
 
-projects="llvm cfe dragonegg test-suite"
+projects="llvm cfe dragonegg compiler-rt test-suite"
 
 # Base SVN URL for the sources.
 Base_url="http://llvm.org/svn/llvm-project"
@@ -214,6 +214,9 @@
     if [ ! -h llvm-test ]; then
         ln -s ../../test-suite.src llvm-test
     fi
+    if [ ! -h compiler-rt ]; then
+        ln -s ../../compiler-rt.src compiler-rt
+    fi
     cd $BuildDir
 }