Cleanup: fix some compiler warnings (mostly deprecations, javaClass)

compiler/daemon/daemon-common/src/org/jetbrains/kotlin/daemon/common/ClientUtils.kt

@@ -90,7 +90,7 @@ private inline fun tryConnectToDaemon(port: Int, report: (DaemonReportCategory,
         when (daemon) {
             null -> report(DaemonReportCategory.EXCEPTION, "daemon not found")
             is CompileService -> return daemon
-            else -> report(DaemonReportCategory.EXCEPTION, "Unable to cast compiler service, actual class received: ${daemon.javaClass.name}")
+            else -> report(DaemonReportCategory.EXCEPTION, "Unable to cast compiler service, actual class received: ${daemon::class.java.name}")
         }
     }
     catch (e: Throwable) {

compiler/daemon/daemon-common/src/org/jetbrains/kotlin/daemon/common/CompileService.kt

@@ -44,22 +44,22 @@ interface CompileService : Remote {
         class Good<out R>(val result: R) : CallResult<R>() {
             override fun get(): R = result
             override fun equals(other: Any?): Boolean = other is Good<*> && this.result == other.result
-            override fun hashCode(): Int = this.javaClass.hashCode() + (result?.hashCode() ?: 1)
+            override fun hashCode(): Int = this::class.java.hashCode() + (result?.hashCode() ?: 1)
         }
         class Ok : CallResult<Nothing>() {
             override fun get(): Nothing = throw IllegalStateException("Get is inapplicable to Ok call result")
             override fun equals(other: Any?): Boolean = other is Ok
-            override fun hashCode(): Int = this.javaClass.hashCode() + 1 // avoiding clash with the hash of class itself
+            override fun hashCode(): Int = this::class.java.hashCode() + 1 // avoiding clash with the hash of class itself
         }
         class Dying : CallResult<Nothing>() {
             override fun get(): Nothing = throw IllegalStateException("Service is dying")
             override fun equals(other: Any?): Boolean = other is Dying
-            override fun hashCode(): Int = this.javaClass.hashCode() + 1 // see comment to Ok.hashCode
+            override fun hashCode(): Int = this::class.java.hashCode() + 1 // see comment to Ok.hashCode
         }
         class Error(val message: String) : CallResult<Nothing>() {
             override fun get(): Nothing = throw Exception(message)
             override fun equals(other: Any?): Boolean = other is Error && this.message == other.message
-            override fun hashCode(): Int = this.javaClass.hashCode() + message.hashCode()
+            override fun hashCode(): Int = this::class.java.hashCode() + message.hashCode()
         }
 
         val isGood: Boolean get() = this is Good<*>