Add test case for conflicting use and use function alias (stas)

Zend/tests/use_function/conflicting_use_alias.phpt

@@ -0,0 +1,20 @@
+--TEST--
+use and use function with the same alias
+--FILE--
+<?php
+
+namespace {
+    function foo() {
+        return 'foo';
+    }
+}
+
+namespace x {
+    use foo as bar;
+    use function foo as bar;
+    var_dump(bar());
+}
+
+?>
+--EXPECT--
+string(3) "foo"