samples: add Terra samples

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

samples/Terra/objc2.t

@@ -0,0 +1,42 @@
+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 IO = terralib.includec("stdio.h")
+
+struct Rect {
+	a : double,
+	b : double,
+	c : double,
+	d : double
+}
+
+terra str(data : &uint8)
+	return OC.NSString:stringWithUTF8String(data)
+end
+
+terra main()
+	OC.NSAutoreleasePool:new()
+	var app = OC.NSApplication:sharedApplication()
+	var rec = Rect {0,0,200,200}
+	var window = OC.NSWindow:alloc():initWithContentRect_styleMask_backing_defer(rec,1,2,false)
+	window:makeKeyAndOrderFront(nil)
+	--[[var img = OC.NSImage:alloc():initByReferencingFile(str("objc2.jpg"))
+	var imgView = OC.NSImageView:alloc():initWithFrame(rec)
+	imgView:setImage(img)
+	window:setContentView(imgView)
+	IO.printf("entering run loop\n")--]]
+	app:run()
+end
+
+terralib.saveobj("objc2", {main = main}, {"-framework","Cocoa"})
+
+--os.execute("./objc2")
+
+end