Default -Xmixin-force-forwarders to true

Also eliminates the warning when a mixin forwarder cannot be implemented
because the target method is a java-defined default method in an
interface that is not a direct parent of the class.

The test t5148 is moved to neg, as expected: It was moved to pos when
disabling mixin forwarders in 33e7106. Same for the changed error
message in t4749.

Author: lrytz

test/files/run/t8549.scala

@@ -79,7 +79,7 @@ object Test extends App {
     }
   }
 
-  // Generated on 20160930-19:54:01 with Scala version 2.12.0-local-d86377e)
+  // Generated on 20160930-16:09:23 with Scala version 2.12.0-local-ffc8e3e)
   overwrite.foreach(updateComment)
 
   check(Some(1))("rO0ABXNyAApzY2FsYS5Tb21lESLyaV6hi3QCAAFMAAV2YWx1ZXQAEkxqYXZhL2xhbmcvT2JqZWN0O3hyAAxzY2FsYS5PcHRpb27+aTf92w5mdAIAAHhwc3IAEWphdmEubGFuZy5JbnRlZ2VyEuKgpPeBhzgCAAFJAAV2YWx1ZXhyABBqYXZhLmxhbmcuTnVtYmVyhqyVHQuU4IsCAAB4cAAAAAE=")
@@ -163,7 +163,7 @@ object Test extends App {
   // TODO SI-8576 Uninitialized field: IndexedSeqLike.scala: 56
   // check(immutable.Stream(1, 2, 3))( "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")
 
-  check(immutable.TreeSet[Int]())(   "rO0ABXNyACJzY2FsYS5jb2xsZWN0aW9uLmltbXV0YWJsZS5UcmVlU2V0sRdVIDjbWAsCAAJMAAhvcmRlcmluZ3QAFUxzY2FsYS9tYXRoL09yZGVyaW5nO0wABHRyZWV0AC5Mc2NhbGEvY29sbGVjdGlvbi9pbW11dGFibGUvUmVkQmxhY2tUcmVlJFRyZWU7eHBzcgAYc2NhbGEubWF0aC5PcmRlcmluZyRJbnQkKTb4nP6aAqoCAAB4cHA=")
+  check(immutable.TreeSet[Int]())(   "rO0ABXNyACJzY2FsYS5jb2xsZWN0aW9uLmltbXV0YWJsZS5UcmVlU2V0sRdVIDjbWAsCAAJMAAhvcmRlcmluZ3QAFUxzY2FsYS9tYXRoL09yZGVyaW5nO0wABHRyZWV0AC5Mc2NhbGEvY29sbGVjdGlvbi9pbW11dGFibGUvUmVkQmxhY2tUcmVlJFRyZWU7eHBzcgAYc2NhbGEubWF0aC5PcmRlcmluZyRJbnQk8u7cgruVzucCAAB4cHA=")
 
   // TODO SI-8576 unstable under -Xcheckinit
   // check(immutable.TreeSet(1, 2, 3))( "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")
@@ -179,12 +179,12 @@ object Test extends App {
   check(mutable.HashMap())( "rO0ABXNyACBzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuSGFzaE1hcAAAAAAAAAABAwAAeHB3DQAAAu4AAAAAAAAABAB4")
   check(mutable.HashMap(1 -> 1))( "rO0ABXNyACBzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuSGFzaE1hcAAAAAAAAAABAwAAeHB3DQAAAu4AAAABAAAABABzcgARamF2YS5sYW5nLkludGVnZXIS4qCk94GHOAIAAUkABXZhbHVleHIAEGphdmEubGFuZy5OdW1iZXKGrJUdC5TgiwIAAHhwAAAAAXEAfgAEeA==")
   check(mutable.HashSet(1, 2, 3))( "rO0ABXNyACBzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuSGFzaFNldAAAAAAAAAABAwAAeHB3DQAAAcIAAAADAAAABQBzcgARamF2YS5sYW5nLkludGVnZXIS4qCk94GHOAIAAUkABXZhbHVleHIAEGphdmEubGFuZy5OdW1iZXKGrJUdC5TgiwIAAHhwAAAAAXNxAH4AAgAAAAJzcQB+AAIAAAADeA==")
-  check(mutable.TreeMap[Int, Int]())( "rO0ABXNyACBzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuVHJlZU1hcNx8qC229ZvwAgACTAAIb3JkZXJpbmd0ABVMc2NhbGEvbWF0aC9PcmRlcmluZztMACZzY2FsYSRjb2xsZWN0aW9uJG11dGFibGUkVHJlZU1hcCQkdHJlZXQALExzY2FsYS9jb2xsZWN0aW9uL211dGFibGUvUmVkQmxhY2tUcmVlJFRyZWU7eHBzcgAYc2NhbGEubWF0aC5PcmRlcmluZyRJbnQkKTb4nP6aAqoCAAB4cHNyACpzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuUmVkQmxhY2tUcmVlJFRyZWUATKc08DWmFQIAAkkABHNpemVMAARyb290dAAsTHNjYWxhL2NvbGxlY3Rpb24vbXV0YWJsZS9SZWRCbGFja1RyZWUkTm9kZTt4cAAAAABw")
-  check(mutable.TreeMap(1 -> 1, 3 -> 6))( "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")
-  check(mutable.TreeMap(1 -> 1, 3 -> 6).range(1, 2))( "rO0ABXNyACxzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuVHJlZU1hcCRUcmVlTWFwVmlldx7MCZxLhVQ8AgADTAAGJG91dGVydAAiTHNjYWxhL2NvbGxlY3Rpb24vbXV0YWJsZS9UcmVlTWFwO0wABGZyb210AA5Mc2NhbGEvT3B0aW9uO0wABXVudGlscQB+AAJ4cgAgc2NhbGEuY29sbGVjdGlvbi5tdXRhYmxlLlRyZWVNYXDcfKgttvWb8AIAAkwACG9yZGVyaW5ndAAVTHNjYWxhL21hdGgvT3JkZXJpbmc7TAAmc2NhbGEkY29sbGVjdGlvbiRtdXRhYmxlJFRyZWVNYXAkJHRyZWV0ACxMc2NhbGEvY29sbGVjdGlvbi9tdXRhYmxlL1JlZEJsYWNrVHJlZSRUcmVlO3hwc3IAGHNjYWxhLm1hdGguT3JkZXJpbmckSW50JCk2+Jz+mgKqAgAAeHBzcgAqc2NhbGEuY29sbGVjdGlvbi5tdXRhYmxlLlJlZEJsYWNrVHJlZSRUcmVlAEynNPA1phUCAAJJAARzaXplTAAEcm9vdHQALExzY2FsYS9jb2xsZWN0aW9uL211dGFibGUvUmVkQmxhY2tUcmVlJE5vZGU7eHAAAAACc3IAKnNjYWxhLmNvbGxlY3Rpb24ubXV0YWJsZS5SZWRCbGFja1RyZWUkTm9kZRsR7BbVWpYAAgAGWgADcmVkTAADa2V5dAASTGphdmEvbGFuZy9PYmplY3Q7TAAEbGVmdHEAfgAKTAAGcGFyZW50cQB+AApMAAVyaWdodHEAfgAKTAAFdmFsdWVxAH4ADXhwAHNyABFqYXZhLmxhbmcuSW50ZWdlchLioKT3gYc4AgABSQAFdmFsdWV4cgAQamF2YS5sYW5nLk51bWJlcoaslR0LlOCLAgAAeHAAAAABcHBzcQB+AAwBc3EAfgAPAAAAA3BxAH4ADnBzcQB+AA8AAAAGcQB+ABFzcQB+AANxAH4ACHEAfgALc3IACnNjYWxhLlNvbWURIvJpXqGLdAIAAUwABXZhbHVlcQB+AA14cgAMc2NhbGEuT3B0aW9u/mk3/dsOZnQCAAB4cHEAfgARc3EAfgAWc3EAfgAPAAAAAg==")
-  check(mutable.TreeSet[Int]())( "rO0ABXNyACBzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuVHJlZVNldM10nxFQDpt4AgACTAAIb3JkZXJpbmd0ABVMc2NhbGEvbWF0aC9PcmRlcmluZztMACZzY2FsYSRjb2xsZWN0aW9uJG11dGFibGUkVHJlZVNldCQkdHJlZXQALExzY2FsYS9jb2xsZWN0aW9uL211dGFibGUvUmVkQmxhY2tUcmVlJFRyZWU7eHBzcgAYc2NhbGEubWF0aC5PcmRlcmluZyRJbnQkKTb4nP6aAqoCAAB4cHNyACpzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuUmVkQmxhY2tUcmVlJFRyZWUATKc08DWmFQIAAkkABHNpemVMAARyb290dAAsTHNjYWxhL2NvbGxlY3Rpb24vbXV0YWJsZS9SZWRCbGFja1RyZWUkTm9kZTt4cAAAAABw")
-  check(mutable.TreeSet(1, 3))( "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")
-  check(mutable.TreeSet(1, 3).range(1, 2))( "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")
+  check(mutable.TreeMap[Int, Int]())( "rO0ABXNyACBzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuVHJlZU1hcNx8qC229ZvwAgACTAAIb3JkZXJpbmd0ABVMc2NhbGEvbWF0aC9PcmRlcmluZztMACZzY2FsYSRjb2xsZWN0aW9uJG11dGFibGUkVHJlZU1hcCQkdHJlZXQALExzY2FsYS9jb2xsZWN0aW9uL211dGFibGUvUmVkQmxhY2tUcmVlJFRyZWU7eHBzcgAYc2NhbGEubWF0aC5PcmRlcmluZyRJbnQk8u7cgruVzucCAAB4cHNyACpzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuUmVkQmxhY2tUcmVlJFRyZWUATKc08DWmFQIAAkkABHNpemVMAARyb290dAAsTHNjYWxhL2NvbGxlY3Rpb24vbXV0YWJsZS9SZWRCbGFja1RyZWUkTm9kZTt4cAAAAABw")
+  check(mutable.TreeMap(1 -> 1, 3 -> 6))( "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")
+  check(mutable.TreeMap(1 -> 1, 3 -> 6).range(1, 2))( "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")
+  check(mutable.TreeSet[Int]())( "rO0ABXNyACBzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuVHJlZVNldM10nxFQDpt4AgACTAAIb3JkZXJpbmd0ABVMc2NhbGEvbWF0aC9PcmRlcmluZztMACZzY2FsYSRjb2xsZWN0aW9uJG11dGFibGUkVHJlZVNldCQkdHJlZXQALExzY2FsYS9jb2xsZWN0aW9uL211dGFibGUvUmVkQmxhY2tUcmVlJFRyZWU7eHBzcgAYc2NhbGEubWF0aC5PcmRlcmluZyRJbnQk8u7cgruVzucCAAB4cHNyACpzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuUmVkQmxhY2tUcmVlJFRyZWUATKc08DWmFQIAAkkABHNpemVMAARyb290dAAsTHNjYWxhL2NvbGxlY3Rpb24vbXV0YWJsZS9SZWRCbGFja1RyZWUkTm9kZTt4cAAAAABw")
+  check(mutable.TreeSet(1, 3))( "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")
+  check(mutable.TreeSet(1, 3).range(1, 2))( "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")
   // TODO SI-8576 Uninitialized field under -Xcheckinit
   // check(new mutable.History())( "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")
   check(mutable.LinkedHashMap(1 -> 2))( "rO0ABXNyACZzY2FsYS5jb2xsZWN0aW9uLm11dGFibGUuTGlua2VkSGFzaE1hcAAAAAAAAAABAwAAeHB3DQAAAu4AAAABAAAABABzcgARamF2YS5sYW5nLkludGVnZXIS4qCk94GHOAIAAUkABXZhbHVleHIAEGphdmEubGFuZy5OdW1iZXKGrJUdC5TgiwIAAHhwAAAAAXNxAH4AAgAAAAJ4")