"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.

idea/testData/stubs/AnnotationClass.expected

@@ -2,4 +2,9 @@ PsiJetFileStubImpl[package=]
   PACKAGE_DIRECTIVE:
   IMPORT_LIST:
   CLASS:[fqName=Test, isEnumEntry=false, isInterface=false, isLocal=false, isTopLevel=true, name=Test, superNames=[]]
-    MODIFIER_LIST:[annotation]
+    MODIFIER_LIST:[]
+      ANNOTATION_ENTRY:[hasValueArguments=false, shortName=annotation]
+        CONSTRUCTOR_CALLEE:
+          TYPE_REFERENCE:
+            USER_TYPE:[isAbsoluteInRootPackage=false]
+              REFERENCE_EXPRESSION:[referencedName=annotation]