added better tests to check if kdoc stops working again and a few more diagnostics and warnings

libraries/docs/website/src/test/kotlin/org/jetbrains/kotlin/site/GenerateSiteTest.kt

@@ -28,7 +28,7 @@ class GenerateSiteTest : TestCase() {
 
         // now lets assert that the API docs generated everything
         assertFilesExist(outDir, "Expected generate API docs are missing - API doc generation failure",
-                "kotlin/package.html", "kotlin/dom/package.html")
+                "kotlin/package-frame.html", "kotlin/dom/package-frame.html", "kotlin/test/package-frame.html")
     }
 
     fun testCopyJSApiDocs(): Unit {

libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/JavadocStyleHtmlDoclet.kt

@@ -60,7 +60,7 @@ class JavadocStyleHtmlDoclet() : Doclet {
         }
 
 
-        println("Generating kdoc to $outputDir")
+        println("Generating kdoc to $outputDir excluding packages ${model.config.ignorePackages}")
         run("allclasses-frame.html", AllClassesFrameTemplate(model, " target=\"classFrame\""))
         run("allclasses-noframe.html", AllClassesFrameTemplate(model))
         // run("constant-values.html", ConstantValuesTemplate(model))

libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/model/KotlinModel.kt

@@ -199,6 +199,8 @@ class KModel(var context: BindingContext, val config: KDocConfig) {
                 val namespaceDescriptor = BindingContextUtils.namespaceDescriptor(context, source)
                 if (namespaceDescriptor != null) {
                     allNamespaces.add(namespaceDescriptor);
+                } else {
+                    warning("No NamespaceDescriptor for source $source")
                 }
             }
         }