Enabling daemon by default, removing word "experimental" from settings field name.

idea/src/org/jetbrains/kotlin/idea/compiler/configuration/KotlinCompilerConfigurableTab.form

@@ -53,7 +53,7 @@
               <grid row="2" column="0" row-span="1" col-span="2" vsize-policy="0" hsize-policy="3" anchor="8" fill="0" indent="0" use-parent-layout="false"/>
             </constraints>
             <properties>
-              <text value="Keep compiler process alive between invocations (experimental)"/>
+              <text value="Keep compiler process alive between invocations"/>
             </properties>
           </component>
         </children>

idea/src/org/jetbrains/kotlin/idea/compiler/configuration/KotlinCompilerWorkspaceSettings.kt

@@ -30,7 +30,7 @@ import com.intellij.util.xmlb.XmlSerializerUtil
 )
 public class KotlinCompilerWorkspaceSettings() : PersistentStateComponent<KotlinCompilerWorkspaceSettings> {
     public var incrementalCompilationEnabled: Boolean = true
-    public var enableDaemon: Boolean = false
+    public var enableDaemon: Boolean = true
 
     override fun getState(): KotlinCompilerWorkspaceSettings {
         return this