samples: add Terra samples

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

samples/Terra/deferbreak.t

@@ -0,0 +1,35 @@
+C = terralib.includec("stdio.h")
+
+cur = global(int)
+
+terra d(a : int)
+    if cur ~= a then
+        C.printf("found %d while expecting %d\n",a,cur)
+        error(cur)
+    end
+    cur = cur + 1
+    C.printf("d%d\n",a)
+end
+d:setinlined(false)
+
+terra side(a : int, b : {})
+    d(a)
+end
+
+terra doit()
+    d(0)
+    for i = 0,10 do
+        defer d(2*i+2)
+        if true then
+            defer d(2*i + 1)
+            if i == 8 then
+                break
+            end
+        end
+    end
+    d(19)
+end
+cur:set(0)
+doit()
+doit:printpretty()
+