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, 3 insertions, 3 deletions

diff --git a/test/files/run/slice-strings.scala b/test/files/run/slice-strings.scala
index 23085866f5..129314387a 100644
--- a/test/files/run/slice-strings.scala
+++ b/test/files/run/slice-strings.scala
@@ -1,7 +1,7 @@
-object Test {  
+object Test {
   def cmp(x1: String) = {
     val x2 = x1.toList
-    
+
     -10 to 10 foreach { i =>
       assert(x1.take(i) == x2.take(i).mkString)
       assert(x1.drop(i) == x2.drop(i).mkString)
@@ -12,7 +12,7 @@ object Test {
       assert(x1.slice(idx1, idx2) == x2.slice(idx1, idx2).mkString)
     }
   }
-  
+
   def main(args: Array[String]): Unit = {
      cmp("abcde")
   }