Refactoring: move engine related classes to subdirectory.

libraries/tools/kotlin-stdlib-gen/src/templates/Comparables.kt

@@ -1,6 +1,5 @@
 package templates
 
-import generators.SourceFile
 import templates.Family.*
 
 fun comparables(): List<GenericFunction> {

libraries/tools/kotlin-stdlib-gen/src/templates/Ranges.kt

@@ -1,6 +1,5 @@
 package templates
 
-import generators.SourceFile
 import templates.Family.*
 
 fun ranges(): List<GenericFunction> {

libraries/tools/kotlin-stdlib-gen/src/templates/engine/Engine.kt

@@ -1,11 +1,9 @@
 package templates
 
-import generators.SourceFile
 import templates.Family.*
 import templates.Family.Collections
 import java.io.StringReader
 import java.util.*
-import kotlin.properties.Delegates
 
 enum class Family {
     Sequences,

libraries/tools/kotlin-stdlib-gen/src/templates/engine/SourceFile.kt

@@ -1,4 +1,4 @@
-package generators
+package templates
 
 enum class SourceFile(jvmClassName: String? = null, val multifile: Boolean = true) {