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/t4027.scala b/test/files/run/t4027.scala
index d70ca0cc3a..585c5c8b37 100644
--- a/test/files/run/t4027.scala
+++ b/test/files/run/t4027.scala
@@ -7,7 +7,7 @@ import collection._
  *  Mapping, filtering, etc. on these views should return sorted maps again.
  */
 object Test extends App {
-  
+
   val sortedmap = SortedMap(1 -> false, 2 -> true, 3 -> false, 4 -> true)
   println(sortedmap.filterKeys(_ % 2 == 0): SortedMap[Int, Boolean])
   println(sortedmap.mapValues(_ + "!"): SortedMap[Int, String])
@@ -15,7 +15,7 @@ object Test extends App {
   println(sortedmap.mapValues(_ + "!").map(t => (t._1, t._2.toString.length)): SortedMap[Int, Int])
   println(sortedmap.filterKeys(_ % 2 == 0).filter(t => t._1 < 2): SortedMap[Int, Boolean])
   println(sortedmap.mapValues(_ + "!").filter(t => t._1 < 2): SortedMap[Int, String])
-  
+
   val immsortedmap = immutable.SortedMap(1 -> false, 2 -> true, 3 -> false, 4 -> true)
   println(immsortedmap.filterKeys(_ % 2 == 0): immutable.SortedMap[Int, Boolean])
   println(immsortedmap.mapValues(_ + "!"): immutable.SortedMap[Int, String])
@@ -23,5 +23,5 @@ object Test extends App {
   println(immsortedmap.mapValues(_ + "!").map(t => (t._1, t._2.toString.length)): immutable.SortedMap[Int, Int])
   println(immsortedmap.filterKeys(_ % 2 == 0).filter(t => t._1 < 2): immutable.SortedMap[Int, Boolean])
   println(immsortedmap.mapValues(_ + "!").filter(t => t._1 < 2): immutable.SortedMap[Int, String])
-  
+
 }