move top-level settingKey,taskKey,inputKey objects to Def and package object

avoids class file name collision on case insensitive filesystem

main/settings/Def.scala

@@ -64,6 +64,11 @@ object Def extends Init[Scope] with TaskMacroExtra
 	//  be used in the inputTask macro as an input with an ultimate result of type T
 	implicit def parserInitToInput[T](p: Initialize[Parser[T]]): InitParserInput[T] = ???
 	implicit def parserInitStateToInput[T](p: Initialize[State => Parser[T]]): StateParserInput[T] = ???
+
+		import language.experimental.macros
+	def settingKey[T](description: String): SettingKey[T] = macro std.KeyMacro.settingKeyImpl[T]
+	def taskKey[T](description: String): TaskKey[T] = macro std.KeyMacro.taskKeyImpl[T]
+	def inputKey[T](description: String): TaskKey[T] = macro std.KeyMacro.taskKeyImpl[T]
 }
 // these need to be mixed into the sbt package object because the target doesn't involve Initialize or anything in Def
 trait TaskMacroExtra 

main/settings/Structure.scala

@@ -500,16 +500,3 @@ object SettingKey
 
 	def local[T: Manifest]: SettingKey[T] = apply[T](AttributeKey.local[T])
 }
-
-object settingKey
-{
-	def apply[T](description: String): SettingKey[T] = macro std.KeyMacro.settingKeyImpl[T]
-}
-object taskKey
-{
-	def apply[T](description: String): TaskKey[T] = macro std.KeyMacro.taskKeyImpl[T]
-}
-object inputKey
-{
-	def apply[T](description: String): TaskKey[T] = macro std.KeyMacro.taskKeyImpl[T]
-}

main/settings/src/test/scala/UsageTest.scala

@@ -21,6 +21,7 @@ package std
 object Assign
 {
 	import java.io.File
+	import Def.{inputKey,settingKey,taskKey}
 	import Def.{Initialize,macroValueT,parserToInput}
 //	import UseTask.{x,y,z,a,set,plain}
 

sbt/package.scala

@@ -50,4 +50,9 @@ package object sbt extends sbt.std.TaskExtra with sbt.Types with sbt.ProcessExtr
 //	final val System = C.System
 	final val Optional = C.Optional
 	def config(s: String): Configuration = Configurations.config(s)
+
+		import language.experimental.macros
+	def settingKey[T](description: String): SettingKey[T] = macro std.KeyMacro.settingKeyImpl[T]
+	def taskKey[T](description: String): TaskKey[T] = macro std.KeyMacro.taskKeyImpl[T]
+	def inputKey[T](description: String): TaskKey[T] = macro std.KeyMacro.taskKeyImpl[T]
 }