defer

how does this seem ?

Process
        canCallOS {
                ^(curThread.clock === AppClock)
        }

Function
        valueInApp {
                if(thisProcess.canCallOS,{ this.value; },{ this.defer; })
        }

better name ?
        I wouldn't mind just changing defer and dropping the delta.
	nearly all usages of it are for the express purpose of ensuring we are 
in the
        right process for gui updates.


-felix