added info about smart casts to diagnostic tests

compiler/testData/diagnostics/tests/smartCasts/inference/dependentOnPrevArg.kt

@@ -3,5 +3,5 @@ package a
 fun <T> foo(u: T, <!UNUSED_PARAMETER!>v<!>: T): T = u
 
 fun test(s: String?) {
-    val <!UNUSED_VARIABLE!>r<!>: String = foo(s!!, s)
+    val <!UNUSED_VARIABLE!>r<!>: String = foo(s!!, <!DEBUG_INFO_AUTOCAST!>s<!>)
 }

compiler/testData/diagnostics/tests/smartCasts/inference/intersectionTypes.kt

@@ -45,7 +45,7 @@ fun testErrorMessages(a: A, ml: MutableList<String>) {
 
 fun rr(s: String?) {
     if (s != null) {
-        val l = arrayListOf("", s)
+        val l = arrayListOf("", <!DEBUG_INFO_AUTOCAST!>s<!>)
         l: MutableList<String>
         <!TYPE_MISMATCH!>l<!>: MutableList<String?>
     }

compiler/testData/diagnostics/tests/smartCasts/inference/kt1355.kt

@@ -6,9 +6,9 @@ import java.util.HashMap
 
 fun foo(map: MutableMap<Int, String>, value: String?) {
     if (value != null) {
-        map.put(1, value) //ok
-        map.set(1, value) //type inference failed
-        map[1] = value    //type inference failed
+        map.put(1, <!DEBUG_INFO_AUTOCAST!>value<!>) //ok
+        map.set(1, <!DEBUG_INFO_AUTOCAST!>value<!>) //type inference failed
+        map[1] = <!DEBUG_INFO_AUTOCAST!>value<!>    //type inference failed
     }
 }
 
@@ -26,7 +26,7 @@ public data open class Tag(public var tagName: String) {
             }
             else {
                 attributes["id"] = value<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>
-                attributes["id"] = value
+                attributes["id"] = <!DEBUG_INFO_AUTOCAST!>value<!>
             }
         }
 }

compiler/testData/diagnostics/tests/smartCasts/inference/kt2746.kt

@@ -5,7 +5,7 @@ class C<T>(t :T)
 
 fun test1(a: Any) {
     if (a is String) {
-        val <!UNUSED_VARIABLE!>c<!>: C<String> = C(a)
+        val <!UNUSED_VARIABLE!>c<!>: C<String> = C(<!DEBUG_INFO_AUTOCAST!>a<!>)
     }
 }
 
@@ -14,6 +14,6 @@ fun f<T>(t :T): C<T> = C(t)
 
 fun test2(a: Any) {
     if (a is String) {
-        val <!UNUSED_VARIABLE!>c1<!>: C<String> = f(a)
+        val <!UNUSED_VARIABLE!>c1<!>: C<String> = f(<!DEBUG_INFO_AUTOCAST!>a<!>)
     }
 }

compiler/testData/diagnostics/tests/smartCasts/inference/kt2851.kt

@@ -4,9 +4,9 @@ package a
 fun main(args: Array<String>) {
     val value: String? = ""
     if (value != null) {
-        foo(Pair("val", value))
+        foo(Pair("val", <!DEBUG_INFO_AUTOCAST!>value<!>))
         foo(Pair("val", value<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>))
-        foo(Pair<String, String>("val", value))
+        foo(Pair<String, String>("val", <!DEBUG_INFO_AUTOCAST!>value<!>))
     }
 }