Maintenance of Predef.

1) Deprecates much of Predef and scala.Console, especially:

 - the read* methods (see below)
 - the set{Out,Err,In} methods (see SI-4793)

2) Removed long-deprecated:

 - Predef#exit
 - Predef#error should have gone, but could not due to sbt

At least the whole source base has now been future-proofed
against the eventual removal of Predef#error.

The low justification for the read* methods should be readily
apparent: they are little used and have no call to be in global
namespace, especially given their weird ad hoc semantics and
unreasonably tempting names such as readBoolean().

3) Segregated the deprecated elements in Predef from the part
which still thrives.

4) Converted all the standard Predef implicits into implicit
classes, value classes where possible:

  - ArrowAssoc, Ensuring, StringFormat, StringAdd, RichException (value)
  - SeqCharSequence, ArrayCharSequence (non-value)

Non-implicit deprecated stubs prop up the names of the
formerly converting methods.

1 files changed, 5 insertions, 5 deletions

diff --git a/test/files/pos/t3440.scala b/test/files/pos/t3440.scala
index 46bba1b207..0e7ca6b70f 100644
--- a/test/files/pos/t3440.scala
+++ b/test/files/pos/t3440.scala
@@ -4,15 +4,15 @@ object test {
   }
 
   case object Int8 extends SampleFormat1 {
-    def readerFactory = error("")
+    def readerFactory = sys.error("")
   }
   case object Int16 extends SampleFormat1 {
-    def readerFactory = error("")
+    def readerFactory = sys.error("")
   }
-	
+
   (new {}: Any) match {
    case 8   => Int8
    case 16  => Int16
-   case _   => error("")
+   case _   => sys.error("")
   }
-}
\ No newline at end of file
+}