"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.txt

@@ -0,0 +1,13 @@
+package
+
+internal fun foo(/*0*/ annotation: Annotation): kotlin.Int
+
+internal final class Annotation {
+    public constructor Annotation(/*0*/ x: kotlin.Int)
+    internal final val x: kotlin.Int
+    internal final fun bar(): kotlin.Int
+    internal final fun baz(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}