"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/tests/annotations/options/annotationAsArg.kt

@@ -0,0 +1,14 @@
+class Annotation(val x: Int) {
+    fun baz() {}
+    fun bar() = x
+}
+
+fun foo(annotation: Annotation): Int {
+    if (annotation.bar() == 0) {
+        annotation.baz()
+        return 0
+    }
+    else {
+        return -1
+    }
+}