manually check for a .exe

canExecute does not guarantee an executable file, and will find java.dll
before java.exe on Windows

Author: martijnhoekstra

src/main/scala/scala/tools/partest/PartestDefaults.scala

@@ -25,7 +25,9 @@ object PartestDefaults {
     import scala.reflect.io.Path, Path._
     Some(Path(jdkHome) / "bin") filter (_.isDirectory) flatMap { p =>
       val candidates = (p walkFilter { e => (e.name == name || e.name.startsWith(s"$name.")) && e.jfile.canExecute }).toList
-      (candidates find (_.name == name) orElse candidates.headOption) map (_.path)
+      val plain = candidates find (_.name == name)
+      val exe = candidates find (_.name == s"${name}.exe")
+      (plain orElse exe orElse candidates.headOption).map(_.path)
     }
   }
 }