Report warning on usages of non-const vals in places where constants expected

compiler/testData/diagnostics/tests/annotations/RecursivelyAnnotatedGlobalProperty.kt

@@ -1,3 +1,3 @@
 // Properties can be recursively annotated
 annotation class ann(val x: Int)
-@ann(x) val x: Int = 1
+@ann(x) const val x: Int = 1

compiler/testData/diagnostics/tests/annotations/RecursivelyAnnotatedGlobalProperty.txt

@@ -1,6 +1,6 @@
 package
 
-@ann(x = 1) public val x: kotlin.Int = 1
+@ann(x = 1) public const val x: kotlin.Int = 1
 
 @kotlin.annotation.annotation() public final class ann : kotlin.Annotation {
     public constructor ann(/*0*/ x: kotlin.Int)

compiler/testData/diagnostics/tests/annotations/annotationParameterMustBeConstant/kotlinProperties.kt

@@ -11,8 +11,8 @@ annotation class Ann(vararg val i: Int)
 class Test
 
 var i1 = 1  // var
-val i2 = 1  // val
+const val i2 = 1  // val
 val i3 = i1 // val with var in initializer
-val i4 = i2 // val with val in initializer
+const val i4 = i2 // val with val in initializer
 var i5 = i1 // var with var in initializer
 var i6 = i2 // var with val in initializer

compiler/testData/diagnostics/tests/annotations/annotationParameterMustBeConstant/kotlinProperties.txt

@@ -1,9 +1,9 @@
 package
 
 public var i1: kotlin.Int
-public val i2: kotlin.Int = 1
+public const val i2: kotlin.Int = 1
 public val i3: kotlin.Int
-public val i4: kotlin.Int = 1
+public const val i4: kotlin.Int = 1
 public var i5: kotlin.Int
 public var i6: kotlin.Int
 

compiler/testData/diagnostics/tests/annotations/annotationParameterMustBeConstant/strings.kt

@@ -1,7 +1,7 @@
 // !DIAGNOSTICS: -UNUSED_VARIABLE
 annotation class Ann(vararg val i: String)
 
-val topLevel = "topLevel"
+const val topLevel = "topLevel"
 
 fun foo() {
     val a1 = "a"

compiler/testData/diagnostics/tests/annotations/annotationParameterMustBeConstant/strings.txt

@@ -1,6 +1,6 @@
 package
 
-public val topLevel: kotlin.String = "topLevel"
+public const val topLevel: kotlin.String = "topLevel"
 public fun foo(): kotlin.Unit
 
 @kotlin.annotation.annotation() public final class Ann : kotlin.Annotation {