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, 1 insertions, 1 deletions

diff --git a/test/junit/scala/tools/nsc/interpreter/ScriptedTest.scala b/test/junit/scala/tools/nsc/interpreter/ScriptedTest.scala
index 01d17110d6..e9f1336623 100644
--- a/test/junit/scala/tools/nsc/interpreter/ScriptedTest.scala
+++ b/test/junit/scala/tools/nsc/interpreter/ScriptedTest.scala
@@ -96,7 +96,7 @@ class ScriptedTest {
   }
   @Test def `on compile error`(): Unit = {
     val engine = scripted
-    val err = "not found: value foo in def f = foo at line number 11 at column number 16"
+    val err = "not found: value foo in def f = foo at line number 11 at column number 9"
     assertThrows[ScriptException](engine.compile("def f = foo"), _ == err)
   }
 }