samples: add Terra samples

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

samples/Terra/globals.t

@@ -0,0 +1,26 @@
+
+struct A { a : int }
+local a = terralib.global(A)
+a:set({3})
+local b = terralib.global(true)
+local c = terralib.global(int[3])
+local d = terralib.global(3.5)
+
+terra foobar()
+	c[0] = 3
+	return a.a + d
+end
+
+e = global(int)
+terra doihaveaname()
+	e = 10
+	return e
+end
+
+assert(doihaveaname() == 10)
+assert(6.5 == foobar())
+print("HERE")
+assert(true == b:get())
+assert(3 == c:get()[0])
+
+print("TODO - fix handling of initializers for array-like things and literal strings")