KT-4343 getStackTrace() for Throwables

libraries/stdlib/src/kotlin/StandardJVM.kt

@@ -38,6 +38,14 @@ public fun Throwable.printStackTrace(stream: PrintStream): Unit {
     jlt.printStackTrace(stream)
 }
 
+/**
+ * Returns the stack trace
+ */
+
+public fun Throwable.getStackTrace() : Array<StackTraceElement> {
+    val jlt = this as java.lang.Throwable
+    return jlt.getStackTrace()!!
+}
 
 /**
  * A helper method for creating a [[Callable]] from a function