added annotations for Collections and Arrays

compiler/testData/diagnostics/tests/inference/dependantOnVarianceNullable.kt

@@ -6,7 +6,7 @@ import java.util.Collections.*
 
 fun foo(list: List<String>) : String {
     val w : String = max(list, comparator<String?> {o1, o2 -> 1
-    })!!
+    })
     return w
 }
 

compiler/testData/diagnostics/tests/inference/possibleCycleOnConstraints.kt

@@ -8,6 +8,6 @@ fun test() {
     //here possibly can be a cycle on constraints
     val <!UNUSED_VARIABLE!>x<!> = g { Collections.<!TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>emptyList<!>() }
 
-    val <!UNUSED_VARIABLE!>y<!> = g<Int> { Collections.emptyList()!! }
-    val <!UNUSED_VARIABLE!>z<!> : List<Int> = g { Collections.emptyList()!! }
+    val <!UNUSED_VARIABLE!>y<!> = g<Int> { Collections.emptyList() }
+    val <!UNUSED_VARIABLE!>z<!> : List<Int> = g { Collections.emptyList() }
 }

compiler/testData/diagnostics/tests/regressions/kt335.336.kt

@@ -3,7 +3,7 @@
 
 import java.util.*
 
-fun <T : Comparable<T>> List<T>.sort() {
+fun <T : Comparable<T>> MutableList<T>.sort() {
   Collections.sort(this) // Error here
 }