Add test against mixing static/non static methods

tests/classes/static_mix_1.phpt

@@ -0,0 +1,26 @@
+--TEST--
+You cannot overload astatic methods with a non static methods
+--SKIPIF--
+<?php if (version_compare(zend_version(), '2.0.0-dev', '<')) die('skip ZendEngine 2 needed'); ?>
+--FILE--
+<?php
+
+class pass {
+	static function show() {
+		echo "Call to function pass::show()\n";
+	}
+}
+
+class fail extends pass {
+	function show() {
+		echo "Call to function fail::show()\n";
+	}
+}
+
+pass::show();
+fail::show();
+
+echo "Done\n"; // shouldn't be displayed of cause
+?>
+--EXPECTF--
+Fatal error: Cannot make static method pass::show() non static in class fail in %s on line %d

tests/classes/static_mix_2.phpt

@@ -0,0 +1,27 @@
+--TEST--
+You cannot overload a non static methods with a static methods
+--SKIPIF--
+<?php if (version_compare(zend_version(), '2.0.0-dev', '<')) die('skip ZendEngine 2 needed'); ?>
+--FILE--
+<?php
+
+class pass {
+	function show() {
+		echo "Call to function pass::show()\n";
+	}
+}
+
+class fail extends pass {
+	static function show() {
+		echo "Call to function fail::show()\n";
+	}
+}
+
+$t = new pass();
+$t->show();
+fail::show();
+
+echo "Done\n"; // shouldn't be displayed of cause
+?>
+--EXPECTF--
+Fatal error: Cannot make non static method pass::show() static in class fail in %s on line %d