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.

2 files changed, 3 insertions, 3 deletions

diff --git a/test/files/pos/t1107b/O.scala b/test/files/pos/t1107b/O.scala
index aa605a6d09..0198867704 100644
--- a/test/files/pos/t1107b/O.scala
+++ b/test/files/pos/t1107b/O.scala
@@ -4,10 +4,10 @@ object O
     case s: Sub => true
     case _ => false
   }
-  
+
   def main(args: Array[String]): Unit = {
     val c = new AnyRef with C
 
     c.bob.toString + c.bob2.toString
-  }  
+  }
 }
diff --git a/test/files/pos/t1107b/T.scala b/test/files/pos/t1107b/T.scala
index 1f3712d529..0dff0b94fd 100644
--- a/test/files/pos/t1107b/T.scala
+++ b/test/files/pos/t1107b/T.scala
@@ -1,6 +1,6 @@
 sealed trait Top
 sealed trait Sub extends Top
-trait C { 
+trait C {
   private object P extends Sub
   def bob() = P.getClass
   def bob2() = O.d(P)