Transform Throwable members to properties

compiler/testData/diagnostics/tests/ResolveToJava.kt

@@ -36,7 +36,7 @@ fun test(<!UNUSED_PARAMETER!>l<!> : <!PLATFORM_CLASS_MAPPED_TO_KOTLIN!>java.util
     // ...
   }
   catch(e: Exception) {
-    System.out.println(e.getMessage())
+    System.out.println(e.message)
   }
 
   PrintStream("sdf")

compiler/testData/diagnostics/tests/regressions/DoubleDefine.kt

@@ -60,6 +60,6 @@ fun main(args: Array<String>) {
       System.out.println("You won!");
   }
   catch(e: Throwable) {
-    System.out.println(e.getMessage())
+    System.out.println(e.message)
   }
 }

compiler/testData/diagnostics/tests/regressions/kt498.txt

@@ -4,9 +4,9 @@ public fun </*0*/ T : kotlin.Any> T.getJavaClass(): java.lang.Class<T>
 
 public final class IdUnavailableException : java.lang.Exception {
     public constructor IdUnavailableException()
+    public final override /*1*/ /*fake_override*/ val cause: kotlin.Throwable?
+    public final override /*1*/ /*fake_override*/ val message: kotlin.String?
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
-    public final override /*1*/ /*fake_override*/ fun getCause(): kotlin.Throwable?
-    public final override /*1*/ /*fake_override*/ fun getMessage(): kotlin.String?
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
     public final override /*1*/ /*fake_override*/ fun printStackTrace(): kotlin.Unit
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String