samples: add Terra samples

source: https://github.com/zdevito/terra/tree/master/tests

samples/Terra/conflict.t

@@ -0,0 +1,12 @@
+
+terra foo()
+end
+
+foo:compile()
+terralib.dumpmodule()
+
+terralib.includecstring [[
+    int foo() {
+        return 4;
+    }
+]]