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/neg/protected-constructors.check b/test/files/neg/protected-constructors.check
index e295917050..f44d7db9b9 100644
--- a/test/files/neg/protected-constructors.check
+++ b/test/files/neg/protected-constructors.check
@@ -3,19 +3,19 @@ protected-constructors.scala:17: error: too many arguments for constructor Foo1:
                ^
 protected-constructors.scala:18: error: constructor Foo2 in class Foo2 cannot be accessed in object P
  Access to protected constructor Foo2 not permitted because
- enclosing object P in package hungus is not a subclass of 
+ enclosing object P in package hungus is not a subclass of
  class Foo2 in package dingus where target is defined
     val foo2 = new Foo2("abc")
                ^
 protected-constructors.scala:19: error: class Foo3 in object Ding cannot be accessed in object dingus.Ding
  Access to protected class Foo3 not permitted because
- enclosing object P in package hungus is not a subclass of 
+ enclosing object P in package hungus is not a subclass of
  object Ding in package dingus where target is defined
     val foo3 = new Ding.Foo3("abc")
                         ^
 protected-constructors.scala:15: error: class Foo3 in object Ding cannot be accessed in object dingus.Ding
  Access to protected class Foo3 not permitted because
- enclosing object P in package hungus is not a subclass of 
+ enclosing object P in package hungus is not a subclass of
  object Ding in package dingus where target is defined
     class Bar3 extends Ding.Foo3("abc")
                             ^