perf: optimize recursion, avoid stackoverflow on larger scripts (#2672)

libsrc/ffdec_lib/testdata/as3_long/build_air_debug.bat

@@ -0,0 +1,7 @@
+@echo off
+set COMPILERKIND=air
+set SWFNAME=as3_long
+call c:\air\bin\mxmlc.bat -debug=true -output bin/%SWFNAME%.%COMPILERKIND%.swf src/Main.as 1> buildlog.%COMPILERKIND%.txt 2>&1
+rem set COMPILERKIND=air.optimize
+rem call c:\air\bin\mxmlc.bat -compiler.optimize -output bin/%SWFNAME%.%COMPILERKIND%.swf src/Main.as 1> buildlog.%COMPILERKIND%.txt 2>&1
+rem -warnings=false

libsrc/ffdec_lib/testdata/as3_long/build_both_debug.bat

@@ -0,0 +1,3 @@
+@echo off
+call build_flex_debug.bat
+call build_air_debug.bat

libsrc/ffdec_lib/testdata/as3_long/build_flex_debug.bat

@@ -0,0 +1,7 @@
+@echo off
+set COMPILERKIND=flex
+set SWFNAME=as3_long
+call c:\flex\bin\mxmlc.bat -debug=true -output bin/%SWFNAME%.%COMPILERKIND%.swf src/Main.as 1> buildlog.%COMPILERKIND%.txt 2>&1
+rem set COMPILERKIND=flex.optimize
+rem call c:\flex\bin\mxmlc.bat -compiler.optimize -output bin/%SWFNAME%.%COMPILERKIND%.swf src/Main.as 1> buildlog.%COMPILERKIND%.txt 2>&1
+rem -warnings=false

libsrc/ffdec_lib/testdata/as3_long/src/Main.as

@@ -0,0 +1,28 @@
+package
+{
+    import flash.display.Sprite;
+    import flash.events.Event;
+    import tests.*;
+    /**
+     * ...
+     * @author JPEXS
+     */
+    public class Main extends Sprite
+    {
+        TestLongScript;
+        
+        public function Main()
+        {
+            if (stage) init();
+            else addEventListener(Event.ADDED_TO_STAGE, init);
+        }
+        
+        private function init(e:Event = null):void
+        {
+            removeEventListener(Event.ADDED_TO_STAGE, init);
+            // entry point
+        }    
+    
+    }
+
+}