Add total reset to repl history and state interfaces

compiler/daemon/daemon-client/src/org/jetbrains/kotlin/daemon/client/RemoteReplCompilerState.kt

@@ -37,10 +37,12 @@ class RemoteReplCompilerStateHistory(private val state: RemoteReplCompilerState)
         throw NotImplementedError("pop from remote history is not supported")
     }
 
+    override fun reset(): Iterable<ILineId> = state.replStateFacade.historyReset().apply {
+        currentGeneration.incrementAndGet()
+    }
+
     override fun resetTo(id: ILineId): Iterable<ILineId> = state.replStateFacade.historyResetTo(id).apply {
-        if (isNotEmpty()) {
-            currentGeneration.incrementAndGet()
-        }
+        currentGeneration.incrementAndGet()
     }
 
     val currentGeneration = AtomicInteger(REPL_CODE_LINE_FIRST_GEN)

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

@@ -31,6 +31,9 @@ interface ReplStateFacade : Remote {
     @Throws(RemoteException::class)
     fun historyGet(index: Int): ILineId
 
+    @Throws(RemoteException::class)
+    fun historyReset(): List<ILineId>
+
     @Throws(RemoteException::class)
     fun historyResetTo(id: ILineId): List<ILineId>
 }

compiler/daemon/src/org/jetbrains/kotlin/daemon/RemoteReplStateFacadeImpl.kt

@@ -35,5 +35,7 @@ class RemoteReplStateFacadeServer(val _id: Int,
 
     override fun historyGet(index: Int): ILineId = state.history[index].id
 
+    override fun historyReset(): List<ILineId> = state.history.reset().toList()
+
     override fun historyResetTo(id: ILineId): List<ILineId> = state.history.resetTo(id).toList()
 }