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.

2 files changed, 2 insertions, 2 deletions

diff --git a/test/files/pos/t3938/Parent.java b/test/files/pos/t3938/Parent.java
index a35f435030..08fae330bb 100644
--- a/test/files/pos/t3938/Parent.java
+++ b/test/files/pos/t3938/Parent.java
@@ -1,7 +1,7 @@
 public class Parent<A>{
     class I1 {}
     class I2 extends Parent.I1 {}
-    
+
     // OKAY:
     class I3 extends I1 {}
     static class I4 {}
diff --git a/test/files/pos/t3938/UseParent.scala b/test/files/pos/t3938/UseParent.scala
index 3f4c2298d5..685d1a03a8 100644
--- a/test/files/pos/t3938/UseParent.scala
+++ b/test/files/pos/t3938/UseParent.scala
@@ -1,6 +1,6 @@
 object UseParent {
   classOf[Parent[AnyRef]#I2]
-  
+
   // OKAY
   classOf[Parent[AnyRef]#I3]
   classOf[Parent.I5]