"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/psi/SimpleModifiers.txt

@@ -25,7 +25,12 @@ JetFile: SimpleModifiers.kt
       PsiWhiteSpace('\n')
       PsiElement(open)('open')
       PsiWhiteSpace('\n')
-      PsiElement(annotation)('annotation')
+      ANNOTATION_ENTRY
+        CONSTRUCTOR_CALLEE
+          TYPE_REFERENCE
+            USER_TYPE
+              REFERENCE_EXPRESSION
+                PsiElement(IDENTIFIER)('annotation')
       PsiWhiteSpace('\n')
       PsiElement(override)('override')
       PsiWhiteSpace('\n')
@@ -67,7 +72,12 @@ JetFile: SimpleModifiers.kt
           PsiWhiteSpace('\n        ')
           PsiElement(open)('open')
           PsiWhiteSpace('\n        ')
-          PsiElement(annotation)('annotation')
+          ANNOTATION_ENTRY
+            CONSTRUCTOR_CALLEE
+              TYPE_REFERENCE
+                USER_TYPE
+                  REFERENCE_EXPRESSION
+                    PsiElement(IDENTIFIER)('annotation')
           PsiWhiteSpace('\n        ')
           PsiElement(override)('override')
           PsiWhiteSpace('\n        ')