Comment out java.nio.charset.StandardCharsets to avoid Java 6 compiler error

Author: ashawley

Diff for: src/test/scala/scala/xml/XmlStringGen.scala

@@ -13,7 +13,7 @@ trait XmlStringGen extends DocumentGen {
 
   val xmlStringGen: Gen[String] = for {
     document <- Arbitrary.arbitrary[Document]
-    encoding <- Gen.const(java.nio.charset.StandardCharsets.UTF_8.name)
+    encoding <- Gen.const("UTF-8") // java.nio.charset.StandardCharsets.UTF_8.name
     xmlDecl <- xmlDeclGen("1.0", encoding)
   } yield {
     val str = xmlDecl + Group(document.children ++ Seq(document.docElem)).toString

Diff for: src/test/scala/scala/xml/factory/XMLLoaderSpec.scala

@@ -47,7 +47,7 @@ object XMLLoaderSpec extends PropertiesFor("factory.XMLLoader")
       out,
       new java.io.OutputStreamWriter(
         out,
-        java.nio.charset.StandardCharsets.UTF_8.name
+        "UTF-8" // java.nio.charset.StandardCharsets.UTF_8.name
       )
     )
   }
@@ -59,7 +59,7 @@ object XMLLoaderSpec extends PropertiesFor("factory.XMLLoader")
   val inputStreamGen: Gen[java.io.InputStream] = for {
     inOut <- Arbitrary.arbitrary[StreamAndWriter]
     document <- Arbitrary.arbitrary[Document]
-    encoding <- Gen.const(java.nio.charset.StandardCharsets.UTF_8.name)
+    encoding <- Gen.const("UTF-8") // java.nio.charset.StandardCharsets.UTF_8.name
     xmlDecl <- Gen.const(true) // Gen.oneOf(true, false)
     doctype <- Arbitrary.arbitrary[dtd.DocType]
     minimizeTags <- Gen.oneOf(