samples: add Terra samples

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

samples/Terra/bug.t

@@ -0,0 +1,20 @@
+local f = assert(io.popen("uname", 'r'))
+local s = assert(f:read('*a'))
+f:close()
+
+if s~="Darwin\n" then
+  print("Warning, not running test b/c this isn't a mac")
+else
+
+
+local OC = require("lib/objc")
+local OCR = terralib.includec("objc/runtime.h")
+
+terra main()
+	var nsobject = OC.NSObject
+	OCR.objc_allocateClassPair([&OCR.objc_class](nsobject.data),nil,0)
+end
+
+main:compile()
+
+end