/**	Set the namespace (context) of the current scope.	<p/>The following example illustrates swapping the current namespace.<p/><pre>fooState = object(); barState = object(); print(this.namespace);setNameSpace(fooState.namespace);print(this.namespace);a=5;setNameSpace(barState.namespace);print(this.namespace);a=6;setNameSpace(fooState.namespace);print(this.namespace);print(a);  // 5setNameSpace(barState.namespace);print(this.namespace);print(a); // 6</pre><p/>You could use this to creats the effect of a static namespace for amethod by explicitly setting the namespace upon entry.<p/>*/bsh.help.setNameSpace =	"usage: setNameSpace( bsh.NameSpace )";setNameSpace( ns ) {	// Set the namespace at depth one (our caller) to the specified namespace.	this.callstack.set( 1, ns );}