added some code to compile the break statement

moo/kernel/Mill.moo

@@ -180,8 +180,8 @@ class MyObject(Object)
 		while (true)
 		{
 			a := a + 1.
-			if (a < 9) { continue }.
-			a dump;
+			if (a > 20) { break }.
+			a dump.
 		}.
 		'---------- END ------------' dump.
 		##Processor sleepFor: 20.

moo/kernel/generr.moo

@@ -98,6 +98,8 @@ class MyObject(Object)
 			'wrong pool dictionary name'
 			'duplicate pool dictionary name'
 			'literal expected'
+			'break or continue not within a loop'
+			'break or continue within a block'
 		).
 
 		f := Stdio open: 'generr.out' for: 'w'.