Disable logoff, restart an shutdown from the menu drop down in osx

Diff

[100 +] prashanthrajagopal  ~/StandardMenus.nib
=> diff objects.xib /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/Resources/English.lproj/StandardMenus.nib/objects.xib
185a186,212
>         <object class="IBCarbonMenuItem" id="236">
>           <string name="title">Sleep</string>
>           <ostype name="command">slep</ostype>
>         </object>
>         <object class="IBCarbonMenuItem" id="237">
>           <string name="title">Restart…</string>
>           <boolean name="dynamic">TRUE</boolean>
>           <ostype name="command">rrst</ostype>
>         </object>
>         <object class="IBCarbonMenuItem" id="284">
>           <string name="title">Restart</string>
>           <boolean name="dynamic">TRUE</boolean>
>           <int name="keyEquivalentModifier">1572864</int>
>           <ostype name="command">rest</ostype>
>         </object>
>         <object class="IBCarbonMenuItem" id="238">
>           <string name="title">Shut Down…</string>
>           <boolean name="dynamic">TRUE</boolean>
>           <boolean name="notPreviousAlternate">TRUE</boolean>
>           <ostype name="command">rsdn</ostype>
>         </object>
>         <object class="IBCarbonMenuItem" id="285">
>           <string name="title">Shut Down</string>
>           <boolean name="dynamic">TRUE</boolean>
>           <int name="keyEquivalentModifier">1572864</int>
>           <ostype name="command">shut</ostype>
>         </object>
231a259
>     <reference idRef="236"/>
347a376
>     <reference idRef="285"/>
372a402
>     <reference idRef="284"/>
381a412
>     <reference idRef="237"/>
388a420
>     <reference idRef="238"/>