Add constructor parameter for compileTimeConstant (can be used in annotation)

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

@@ -0,0 +1,28 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE
+annotation class Ann(vararg val i: String)
+
+val topLevel = "topLevel"
+
+fun foo() {
+    val a1 = "a"
+    val a2 = "b"
+    val a3 = a1 + a2
+
+    val a4 = 1
+    val a5 = 1.0
+
+    [Ann(
+            <!ANNOTATION_PARAMETER_MUST_BE_CONST!>a1<!>,
+            <!ANNOTATION_PARAMETER_MUST_BE_CONST!>a2<!>,
+            <!ANNOTATION_PARAMETER_MUST_BE_CONST!>a3<!>,
+            "$topLevel",
+            <!ANNOTATION_PARAMETER_MUST_BE_CONST!>"$a1"<!>,
+            <!ANNOTATION_PARAMETER_MUST_BE_CONST!>"$a1 $topLevel"<!>,
+            <!ANNOTATION_PARAMETER_MUST_BE_CONST!>"$a4"<!>,
+            <!ANNOTATION_PARAMETER_MUST_BE_CONST!>"$a5"<!>,
+            <!ANNOTATION_PARAMETER_MUST_BE_CONST!>a1 + a2<!>,
+            <!ANNOTATION_PARAMETER_MUST_BE_CONST!>"a" + a2<!>,
+            "a" + topLevel,
+            <!ANNOTATION_PARAMETER_MUST_BE_CONST!>"a" + a4<!>
+    )] val b = 1
+}