Importing the skeleton of system tray implementation and making sure it compiles and works

There was an interesting "problem" due to automatic reference counting
(-fobjc-arc flag).  XCode includes this flag by default, so making sure
that wscript is doing the same thing.
diff --git a/osx/MainMenu.xib b/osx/MainMenu.xib
new file mode 100644
index 0000000..c8a70f5
--- /dev/null
+++ b/osx/MainMenu.xib
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="4510" systemVersion="12F37" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
+    <dependencies>
+        <deployment defaultVersion="1080" identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="4510"/>
+    </dependencies>
+    <objects>
+        <customObject id="-2" userLabel="File's Owner" customClass="NSApplication">
+            <connections>
+                <outlet property="delegate" destination="494" id="495"/>
+            </connections>
+        </customObject>
+        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
+        <customObject id="-3" userLabel="Application"/>
+        <customObject id="494" customClass="MenuDelegate">
+            <connections>
+                <outlet property="statusMenu" destination="ovl-jc-kIR" id="dlz-Qz-Ia0"/>
+            </connections>
+        </customObject>
+        <customObject id="420" customClass="NSFontManager"/>
+        <menu id="ovl-jc-kIR">
+            <items>
+                <menuItem title="start" id="yhj-L6-nZL">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                </menuItem>
+                <menuItem title="stop" id="TvT-OR-oT4">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                </menuItem>
+                <menuItem title="ndnstatus" id="Tap-5m-ZRP">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                </menuItem>
+                <menuItem title="Item" id="17X-uc-n9i">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                </menuItem>
+            </items>
+        </menu>
+    </objects>
+</document>