samples: add Terra samples

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

samples/Terra/quote10.t

@@ -0,0 +1,13 @@
+
+terra foo()
+	return 1,2
+end
+
+local q = `foo()
+
+terra bar()
+	return q
+end
+
+local test = require("test")
+test.meq({1,2},bar())