Merge branch '2.10.x' into master

* 2.10.x: (51 commits)
  improved/fixed reflection docs based on comments
  Fixes SI-6354: improved error messages for Dynamic signature mismatches.
  Add RedBlackTree tests for take/drop/slice.
  Retain Ordering in drop/take/slice signatures.
  test case closes SI-5770
  clarify caveats of App trait
  Remove `@static` annotation from the library.
  New starr that does not depend on `@static`.
  improved reflection documentation
  pull request feedback
  SI-5692 better error message
  SI-5942 toolboxes now reset front ends
  SI-6287 fixes synthetic symbol clashes in toolbox
  Revert "Implement @static annotation on singleton object fields."
  Revert "WIP add private/lazy checks and a few tests."
  Revert "Fixes SI-6189."
  Revert "Fixes SI-6236."
  Revert "Fix SI-4581."
  Revert "Fix SI-6294."
  refactors java reflection tests
  ...

Conflicts:
	src/compiler/scala/tools/nsc/typechecker/Typers.scala
	src/partest/scala/tools/partest/package.scala
	src/reflect/scala/reflect/internal/Trees.scala

8 files changed, 20 insertions, 25 deletions

diff --git a/src/library/scala/runtime/RichDouble.scala b/src/library/scala/runtime/RichDouble.scala
index 19396a3d48..d7d2603ef7 100644
--- a/src/library/scala/runtime/RichDouble.scala
+++ b/src/library/scala/runtime/RichDouble.scala
@@ -6,7 +6,8 @@
 **                          |/                                          **
 \*                                                                      */
 
-package scala.runtime
+package scala
+package runtime
 
 final class RichDouble(val self: Double) extends AnyVal with FractionalProxy[Double] {
   protected def num = scala.math.Numeric.DoubleIsFractional
diff --git a/src/library/scala/runtime/RichFloat.scala b/src/library/scala/runtime/RichFloat.scala
index 9fbb3c19bb..9c3a14d3be 100644
--- a/src/library/scala/runtime/RichFloat.scala
+++ b/src/library/scala/runtime/RichFloat.scala
@@ -6,7 +6,8 @@
 **                          |/                                          **
 \*                                                                      */
 
-package scala.runtime
+package scala
+package runtime
 
 final class RichFloat(val self: Float) extends AnyVal with FractionalProxy[Float] {
   protected def num         = scala.math.Numeric.FloatIsFractional
diff --git a/src/library/scala/runtime/ScalaRunTime.scala b/src/library/scala/runtime/ScalaRunTime.scala
index ad36006646..1e0500ce29 100644
--- a/src/library/scala/runtime/ScalaRunTime.scala
+++ b/src/library/scala/runtime/ScalaRunTime.scala
@@ -6,7 +6,8 @@
 **                          |/                                          **
 \*                                                                      */
 
-package scala.runtime
+package scala
+package runtime
 
 import scala.collection.{ Seq, IndexedSeq, TraversableView, AbstractIterator }
 import scala.collection.mutable.WrappedArray
@@ -15,6 +16,7 @@ import scala.collection.generic.{ Sorted }
 import scala.reflect.{ ClassTag, classTag }
 import scala.util.control.ControlThrowable
 import scala.xml.{ Node, MetaData }
+import java.lang.{ Class => jClass }
 
 import java.lang.Double.doubleToLongBits
 import java.lang.reflect.{ Modifier, Method => JMethod }
@@ -27,10 +29,10 @@ object ScalaRunTime {
   def isArray(x: Any, atLevel: Int = 1): Boolean =
     x != null && isArrayClass(x.getClass, atLevel)
 
-  private def isArrayClass(clazz: Class[_], atLevel: Int): Boolean =
+  private def isArrayClass(clazz: jClass[_], atLevel: Int): Boolean =
     clazz.isArray && (atLevel == 1 || isArrayClass(clazz.getComponentType, atLevel - 1))
 
-  def isValueClass(clazz: Class[_]) = clazz.isPrimitive()
+  def isValueClass(clazz: jClass[_]) = clazz.isPrimitive()
   def isTuple(x: Any) = x != null && tupleNames(x.getClass.getName)
   def isAnyVal(x: Any) = x match {
     case _: Byte | _: Short | _: Char | _: Int | _: Long | _: Float | _: Double | _: Boolean | _: Unit => true
@@ -49,7 +51,7 @@ object ScalaRunTime {
 
   /** Return the class object representing an array with element class `clazz`.
    */
-  def arrayClass(clazz: Class[_]): Class[_] = {
+  def arrayClass(clazz: jClass[_]): jClass[_] = {
     // newInstance throws an exception if the erasure is Void.TYPE. see SI-5680
     if (clazz == java.lang.Void.TYPE) classOf[Array[Unit]]
     else java.lang.reflect.Array.newInstance(clazz, 0).getClass
@@ -57,18 +59,19 @@ object ScalaRunTime {
 
   /** Return the class object representing elements in arrays described by a given schematic.
    */
-  def arrayElementClass(schematic: Any): Class[_] = schematic match {
-    case cls: Class[_] => cls.getComponentType
+  def arrayElementClass(schematic: Any): jClass[_] = schematic match {
+    case cls: jClass[_]   => cls.getComponentType
     case tag: ClassTag[_] => tag.runtimeClass
-    case _ => throw new UnsupportedOperationException("unsupported schematic %s (%s)".format(schematic, if (schematic == null) "null" else schematic.getClass))
+    case _                =>
+      throw new UnsupportedOperationException(s"unsupported schematic $schematic (${schematic.getClass})")
   }
 
   /** Return the class object representing an unboxed value type,
    *  e.g. classOf[int], not classOf[java.lang.Integer].  The compiler
    *  rewrites expressions like 5.getClass to come here.
    */
-  def anyValClass[T <: AnyVal : ClassTag](value: T): Class[T] =
-    classTag[T].runtimeClass.asInstanceOf[Class[T]]
+  def anyValClass[T <: AnyVal : ClassTag](value: T): jClass[T] =
+    classTag[T].runtimeClass.asInstanceOf[jClass[T]]
 
   /** Retrieve generic array element */
   def array_apply(xs: AnyRef, idx: Int): Any = xs match {
diff --git a/src/library/scala/runtime/SeqCharSequence.scala b/src/library/scala/runtime/SeqCharSequence.scala
index dc9594d960..8cb958c05f 100644
--- a/src/library/scala/runtime/SeqCharSequence.scala
+++ b/src/library/scala/runtime/SeqCharSequence.scala
@@ -6,7 +6,8 @@
 **                          |/                                          **
 \*                                                                      */
 
-package scala.runtime
+package scala
+package runtime
 
 import java.util.Arrays.copyOfRange
 
diff --git a/src/library/scala/runtime/StringAdd.scala b/src/library/scala/runtime/StringAdd.scala
index 4693b0bf44..f074b5407e 100644
--- a/src/library/scala/runtime/StringAdd.scala
+++ b/src/library/scala/runtime/StringAdd.scala
@@ -10,10 +10,5 @@ package scala.runtime
 
 /** A wrapper class that adds string concatenation `+` to any value */
 final class StringAdd(val self: Any) extends AnyVal {
-  // Note: The implicit conversion from Any to StringAdd is one of two
-  // implicit conversions from Any to AnyRef in Predef. It is important to have at least
-  // two such conversions, so that silent conversions from value types to AnyRef
-  // are avoided. If StringFormat should become a value class, another
-  // implicit conversion from Any to AnyRef has to be introduced in Predef
   def +(other: String) = String.valueOf(self) + other
 }
diff --git a/src/library/scala/runtime/StringFormat.scala b/src/library/scala/runtime/StringFormat.scala
index 1f5feec9e1..7d34e82812 100644
--- a/src/library/scala/runtime/StringFormat.scala
+++ b/src/library/scala/runtime/StringFormat.scala
@@ -11,12 +11,6 @@ package scala.runtime
 /** A wrapper class that adds a `formatted` operation to any value
  */
 final class StringFormat(val self: Any) extends AnyVal {
-  // Note: The implicit conversion from Any to StringFormat is one of two
-  // implicit conversions from Any to AnyRef in Predef. It is important to have at least
-  // two such conversions, so that silent conversions from value types to AnyRef
-  // are avoided. If StringFormat should become a value class, another
-  // implicit conversion from Any to AnyRef has to be introduced in Predef
-
   /** Returns string formatted according to given `format` string.
    *  Format strings are as for `String.format`
    *  (@see java.lang.String.format).
diff --git a/src/library/scala/runtime/Tuple2Zipped.scala b/src/library/scala/runtime/Tuple2Zipped.scala
index bd52c678af..6030c9ea90 100644
--- a/src/library/scala/runtime/Tuple2Zipped.scala
+++ b/src/library/scala/runtime/Tuple2Zipped.scala
@@ -21,7 +21,7 @@ trait ZippedTraversable2[+El1, +El2] extends Any {
 }
 object ZippedTraversable2 {
   implicit def zippedTraversable2ToTraversable[El1, El2](zz: ZippedTraversable2[El1, El2]): Traversable[(El1, El2)] = {
-    new collection.AbstractTraversable[(El1, El2)] {
+    new scala.collection.AbstractTraversable[(El1, El2)] {
       def foreach[U](f: ((El1, El2)) => U): Unit = zz foreach Function.untupled(f)
     }
   }
diff --git a/src/library/scala/runtime/Tuple3Zipped.scala b/src/library/scala/runtime/Tuple3Zipped.scala
index 3b78b6261a..3970c9973d 100644
--- a/src/library/scala/runtime/Tuple3Zipped.scala
+++ b/src/library/scala/runtime/Tuple3Zipped.scala
@@ -18,7 +18,7 @@ trait ZippedTraversable3[+El1, +El2, +El3] extends Any {
 }
 object ZippedTraversable3 {
   implicit def zippedTraversable3ToTraversable[El1, El2, El3](zz: ZippedTraversable3[El1, El2, El3]): Traversable[(El1, El2, El3)] = {
-    new collection.AbstractTraversable[(El1, El2, El3)] {
+    new scala.collection.AbstractTraversable[(El1, El2, El3)] {
       def foreach[U](f: ((El1, El2, El3)) => U): Unit = zz foreach Function.untupled(f)
     }
   }