javac-wrapper: refactoring, fixes and tests

compiler/testData/javac/diagnostics/tests/qualifiedExpression/GenericClassVsPackage.kt

@@ -0,0 +1,55 @@
+// FILE: a/b/c.java
+package a.b;
+
+public class c {
+    public void ab_c() {}
+}
+
+// FILE: a/b.java
+package a;
+
+public class b<T> {
+    public static class c {
+        public void a_bc() {}
+    }
+}
+
+// FILE: c/d.java
+package c;
+
+import a.b.c;
+
+public class d {
+
+    public c getC() { return null; }
+
+}
+
+// FILE: c.kt
+import a.b.c
+import c.d
+
+fun test(ab_c: c) {
+    ab_c.ab_c()
+
+    val ab_c2: a.b.c = a.b.c()
+    ab_c2.ab_c()
+
+    val ab_c3 = a.b.c()
+    ab_c3.ab_c()
+}
+
+fun test2(ab_c: a.b.c) {
+    ab_c.<!UNRESOLVED_REFERENCE!>a_bc<!>()
+    ab_c.ab_c()
+}
+
+fun test3() = d().getC()
+
+fun test4() {
+    val ab_c = test3()
+    ab_c.ab_c()
+
+    val ab_c2 = test3()
+    ab_c2.<!UNRESOLVED_REFERENCE!>a_bc<!>()
+}