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, 4 insertions, 4 deletions

diff --git a/test/files/run/scan.scala b/test/files/run/scan.scala
index f056c77ba1..47e0a7d976 100644
--- a/test/files/run/scan.scala
+++ b/test/files/run/scan.scala
@@ -6,17 +6,17 @@ object Test {
 
   def main(args: Array[String]) {
     val lst = List(1, 2, 3, 4, 5)
-    
+
     assert(lst.scanLeft(0)(_ + _) == List(0, 1, 3, 6, 10, 15))
     assert(lst.scanRight(0)(_ + _) == List(15, 14, 12, 9, 5, 0))
-    
+
     val emp = List[Int]()
     assert(emp.scanLeft(0)(_ + _) == List(0))
     assert(emp.scanRight(0)(_ + _) == List(0))
-    
+
     val stream = Stream(1, 2, 3, 4, 5)
     assert(stream.scanLeft(0)(_ + _) == Stream(0, 1, 3, 6, 10, 15))
-    
+
     assert(Stream.from(1).scanLeft(0)(_ + _).take(5) == Stream(0, 1, 3, 6, 10))
   }