finished handling of #limited and #final class modifiers

moo/kernel/Collect.moo

@@ -105,11 +105,18 @@ class(#character) String(Array)
 	{
 		^self
 	}
+	
+	(* TODO: Symbol is a #final class. Symbol new is not allowed. To create a symbol programatically, you should
+	 *       build a string and send asSymbol to the string............
+	method asSymbol
+	{
+	}
+	*)
 }
 
 ## -------------------------------------------------------------------------------
 
-class(#character) Symbol(String)
+class(#character,#final,#limited) Symbol(String)
 {
 	method asString
 	{

moo/kernel/Process.moo

@@ -1,5 +1,5 @@
 
-class(#pointer,#limited) Process(Object)
+class(#pointer,#final,#limited) Process(Object)
 {
 	var initial_context, current_context, state, sp, prev, next, sem, perr.
 
@@ -345,7 +345,7 @@ class SemaphoreHeap(Object)
 	}
 }
 
-class(#limited) ProcessScheduler(Object)
+class(#final,#limited) ProcessScheduler(Object)
 {
 	var tally, active, runnable_head, runnable_tail, sem_heap.
 

moo/kernel/generr.moo

@@ -74,7 +74,8 @@ class MyObject(Object)
 			'duplicate class'
 			'contradictory class definition'
 			'wrong class name'
-			'non-pointer class inheriting superclass with trailer size set'
+			'non-pointer class not allowed to inherit a superclass with trailer size set'
+			'not allowed to inherit a #final class'
 			'variable declaration not allowed'
 			'modifier expected'
 			'wrong modifier'