Report warning for several modules with same name on module path

compiler/testData/javaModules/severalModulesWithTheSameName/dependency1/foo/Foo.java

@@ -0,0 +1,3 @@
+package foo;
+
+public class Foo {}

compiler/testData/javaModules/severalModulesWithTheSameName/dependency1/module-info.java

@@ -0,0 +1,3 @@
+module dependency {
+    exports foo;
+}

compiler/testData/javaModules/severalModulesWithTheSameName/dependency2/bar/Bar.java

@@ -0,0 +1,3 @@
+package bar;
+
+public class Bar {}

compiler/testData/javaModules/severalModulesWithTheSameName/dependency2/module-info.java

@@ -0,0 +1,3 @@
+module dependency {
+    exports bar;
+}

compiler/testData/javaModules/severalModulesWithTheSameName/main.txt

@@ -0,0 +1,11 @@
+compiler/testData/javaModules/severalModulesWithTheSameName/main/usage.kt:2:8: error: unresolved reference: bar
+import bar.Bar
+       ^
+compiler/testData/javaModules/severalModulesWithTheSameName/main/usage.kt:6:12: error: unresolved reference: Bar
+    val b: Bar = Bar()
+           ^
+compiler/testData/javaModules/severalModulesWithTheSameName/main/usage.kt:6:18: error: unresolved reference: Bar
+    val b: Bar = Bar()
+                 ^
+$TMP_DIR$/dependency2.jar: warning: the root is ignored because a module with the same name 'dependency' has been found earlier on the module path at: $TMP_DIR$/dependency1.jar
+COMPILATION_ERROR

compiler/testData/javaModules/severalModulesWithTheSameName/main/module-info.java

@@ -0,0 +1,3 @@
+module main {
+    requires dependency;
+}

compiler/testData/javaModules/severalModulesWithTheSameName/main/usage.kt

@@ -0,0 +1,8 @@
+import foo.Foo
+import bar.Bar
+
+fun usage(): String {
+    val f: Foo = Foo()
+    val b: Bar = Bar()
+    return "$f$b"
+}