reorganized build-ins and implement a circular queue as an example

misc/bugs/bug.noja

@@ -0,0 +1,6 @@
+a = [];
+i = 0;
+while(i<100000000):{
+    a[i]= "ciao mondo mmododooddododododododododododdodododododd";
+    i = i+1;
+}

misc/bugs/bug2.noja

@@ -0,0 +1 @@
+a = b = c;

misc/deepfailure.noja

@@ -0,0 +1,14 @@
+
+fun fail_at_depth(depth) {
+
+	fun fail(current_depth) {
+
+		assert(current_depth < depth);
+
+		fail(current_depth + 1);
+	}
+
+	fail(0);
+}
+
+fail_at_depth(9);

misc/makegarbage.noja

@@ -0,0 +1,19 @@
+# This script creates a lot of objects, so it can be used to stress the garbage collector.
+
+print('Start\n');
+
+i = 0;
+n = 10000000;
+
+while i < n: {
+
+	1 + 1 * 1;
+	i = i + 1;
+
+	fun printPercent()
+		print(100.0 * i / n, '%\n');
+	
+	printPercent();
+}
+
+print('End\n');