Cull extraneous whitespace.

One last flurry with the broom before I leave you slobs to code
in your own filth. Eliminated all the trailing whitespace I
could manage, with special prejudice reserved for the test cases
which depended on the preservation of trailing whitespace.

Was reminded I cannot figure out how to eliminate the trailing
space on the "scala> " prompt in repl transcripts. At least
reduced the number of such empty prompts by trimming transcript
code on the way in.

Routed ConsoleReporter's "printMessage" through a trailing
whitespace stripping method which might help futureproof
against the future of whitespace diseases. Deleted the up-to-40
lines of trailing whitespace found in various library files.

It seems like only yesterday we performed whitespace surgery
on the whole repo. Clearly it doesn't stick very well. I suggest
it would work better to enforce a few requirements on the way in.

1 files changed, 7 insertions, 7 deletions

diff --git a/test/files/pos/scala-singleton.scala b/test/files/pos/scala-singleton.scala
index 5e0baa0cb2..08038db93b 100644
--- a/test/files/pos/scala-singleton.scala
+++ b/test/files/pos/scala-singleton.scala
@@ -3,12 +3,12 @@
 object Test {
   def f1(x: AnyRef with Singleton): AnyRef with Singleton = x
   def f2[T <: AnyRef with Singleton](x: T): T = x
-    
+
   val x1: AnyRef with Singleton = "abc"
   val x2 = "def"
   final val x3 = "ghi"
   val x4: String = "jkl"
-  
+
   // compiles...
   def narrow1(x: AnyRef): AnyRef with Singleton = x
 
@@ -17,26 +17,26 @@ object Test {
 
   // fails, wait, what? This fails and narrow1 compiles?
   def narrow3(x: AnyRef): AnyRef with Singleton = x.asInstanceOf[AnyRef with Singleton]
-  
+
   // ok
   def narrow4[T <: AnyRef](x: T): AnyRef with Singleton = x
-  
+
   object imp {
     implicit def narrow4[T <: AnyRef](x: T): AnyRef with Singleton = x
     val x5: String = "mno"
     def imp1 = f1(x5)
-    
+
     // f2(x5)   // doesn't work but I think it should
     def imp2 = f2(narrow4(x5))
   }
-  
+
   def main(args: Array[String]): Unit = {
     // compiles
     f1(x1)
     f1(x2)
     f1(x3)
     f1(x4)
-    
+
     f2(x1)
     // f2(x2)
     // f2(x3)   // maybe this one should work