"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/prohibitPositionedArgument/kotlinAnnotation.txt

@@ -4,7 +4,7 @@ Ann(value = "a", x = IntegerValueType(1), y = 1.0.toDouble()) internal fun foo1(
 Ann(value = "b", x = IntegerValueType(2), y = 2.0.toDouble()) internal fun foo2(): kotlin.Unit
 Ann(value = "c", x = IntegerValueType(3), y = 2.0.toDouble()) internal fun foo3(): kotlin.Unit
 
-internal final annotation class Ann : kotlin.Annotation {
+kotlin.annotation.annotation() internal final annotation class Ann : kotlin.Annotation {
     public constructor Ann(/*0*/ x: kotlin.Int, /*1*/ value: kotlin.String, /*2*/ y: kotlin.Double)
     internal final val value: kotlin.String
     internal final val x: kotlin.Int