Use scalaOrganization when adding the compiler dependency

Sbt has a setting for controlling the Scala organization, and
it allows people to use the Typelevel compiler, for instance.
We use the same mechanism in Hydra, and this will allow everyone
to use the same benchmark code.

Author: dragos

build.sbt

@@ -36,13 +36,13 @@ lazy val compilation = addJmh(project).settings(
   // We should be able to switch this project to a broad range of Scala versions for comparative
   // benchmarking. As such, this project should only depend on the high level `MainClass` compiler API.
   description := "Black box benchmark of the compiler",
-  libraryDependencies += "org.scala-lang" % "scala-compiler" % scalaVersion.value,
+  libraryDependencies += scalaOrganization.value % "scala-compiler" % scalaVersion.value,
   mainClass in (Jmh, run) := Some("scala.bench.ScalacBenchmarkRunner")
 ).settings(addJavaOptions).dependsOn(infrastructure)
 
 lazy val micro = addJmh(project).settings(
   description := "Finer grained benchmarks of compiler internals",
-  libraryDependencies += "org.scala-lang" % "scala-compiler" % scalaVersion.value
+  libraryDependencies += scalaOrganization.value % "scala-compiler" % scalaVersion.value
 ).settings(addJavaOptions).dependsOn(infrastructure)
 
 lazy val jvm = addJmh(project).settings(