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/pos/t4020.scala b/test/files/pos/t4020.scala
index 8a758d53f7..f976460191 100644
--- a/test/files/pos/t4020.scala
+++ b/test/files/pos/t4020.scala
@@ -14,11 +14,11 @@ class B {
     def mthd(foo: a2.Foo) = {
         foo match {
             case a2.Foo2(i) => i
-            
-            // Note: This case is impossible.  In fact, scalac 
+
+            // Note: This case is impossible.  In fact, scalac
             // will (correctly) report an error if it is uncommented,
             // but a warning if it is commented.
-            
+
             // case a1.Foo1(i) => i
         }
     }