Kapt: Support nested annotations property.

Also do not rely on Java class comparison, check against qualified names.
(cherry picked from commit 7610945)

plugins/annotation-processing/testData/processors/Nested.kt

@@ -0,0 +1,7 @@
+import kotlin.reflect.KClass
+
+annotation class Anno(val a: Anno2, val b: Array<Anno2>, val c: String, val d: KClass<*>, val e: Array<KClass<*>>)
+annotation class Anno2(val name: String)
+
+@Anno(a = Anno2("Tim"), b = arrayOf(Anno2("Kate"), Anno2("Mary")), c = "ABC", d = Anno2::class, e = arrayOf(Anno::class))
+class Test