add cloog-0.18.0.tar.gz

Needed by GCC 4.8+ to enable graphite framework for loop optimizations

Change-Id: I2f6f1f1d608f44ab15c0d441773fff8e3d7ef494
diff --git a/cloog-0.18.0.tar.gz b/cloog-0.18.0.tar.gz
new file mode 100644
index 0000000..99dc41e
--- /dev/null
+++ b/cloog-0.18.0.tar.gz
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