SI-10120 ReplReporter handles message indent

Instead of indenting source code to make messages
align on output, let the reporter add indentation,
only if the source is the console (and not a pastie
or a loaded file).

Previously, syntax errors were not indented.

```
$ skala
Welcome to Scala 2.12.2-20170108-010722-939abf1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_111).
Type in expressions for evaluation. Or try :help.

scala> 'abc'
<console>:1: error: unclosed character literal (or use " for string literal "abc")
       'abc'
           ^

scala> :quit
$ scala
Welcome to Scala 2.12.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_111).
Type in expressions for evaluation. Or try :help.

scala> 'abc'
<console>:1: error: unclosed character literal
'abc'
    ^
```

1 files changed, 4 insertions, 4 deletions

diff --git a/test/files/run/repl-colon-type.check b/test/files/run/repl-colon-type.check
index 1217e8d8c2..0fa5695155 100644
--- a/test/files/run/repl-colon-type.check
+++ b/test/files/run/repl-colon-type.check
@@ -1,8 +1,8 @@
 
 scala> :type List[1, 2, 3]
 <console>:1: error: identifier expected but integer literal found.
-List[1, 2, 3]
-     ^
+       List[1, 2, 3]
+            ^
 
 scala> :type List(1, 2, 3)
 List[Int]
@@ -38,8 +38,8 @@ scala> :type protected lazy val f = 5
  Access to protected lazy value f not permitted because
  enclosing object $eval in package $line13 is not a subclass of
  object $iw where target is defined
-  lazy val $result = f
-                                           ^
+         lazy val $result = f
+                                                  ^
 
 scala> :type def f = 5
 => Int