KT-864 wrong namespace class name generation

compiler/testData/codegen/regressions/kt864.jet

@@ -0,0 +1,20 @@
+import std.io.*
+import std.util.*
+import java.io.*
+import java.util.*
+
+fun sample() : Reader {
+    return StringReader("""Hello
+World""");
+  }
+
+  fun box() : String {
+    // TODO compiler error
+    // both these expressions causes java.lang.NoClassDefFoundError: collections/namespace
+    val list1 = sample().useLines{it.toArrayList()}
+    val list2 = sample().useLines<ArrayList<String>>{it.toArrayList()}
+
+    if(arrayList("Hello", "World") != list1) return "fail"
+    if(arrayList("Hello", "World") != list2) return "fail"
+    return "OK"
+  }