"annotation" is now parsed as an identifier. It is no longer a soft keyword.

Sometimes it's allowed to parse "annotation" unescaped even if other annotations must be escaped.
A set of annotations and their options tests.
A swarm of existing tests fixed (mostly kotlin.annotation.annotation() added to txt-files).
STUB_VERSION increased. Some quick fixes slightly changed.

compiler/testData/diagnostics/testsWithStdLib/annotations/ClassObjectAnnotatedWithItsKClass.txt

@@ -2,7 +2,7 @@ package
 
 package test {
 
-    internal final annotation class AnnClass : kotlin.Annotation {
+    kotlin.annotation.annotation() internal final annotation class AnnClass : kotlin.Annotation {
         public constructor AnnClass(/*0*/ a: kotlin.reflect.KClass<*>)
         internal final val a: kotlin.reflect.KClass<*>
         public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean