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.

3 files changed, 7 insertions, 7 deletions

diff --git a/test/files/neg/t4851/J.java b/test/files/neg/t4851/J.java
index dbf8b8288e..9c35b8a16e 100644
--- a/test/files/neg/t4851/J.java
+++ b/test/files/neg/t4851/J.java
@@ -1,14 +1,14 @@
 public class J {
   Object x;
-  
+
   public J(Object x) {
     this.x = x;
   }
-  
+
   public J(int x1, int x2, int x3, int x4, int x5, int x6) {
     this.x = null;
   }
-  
+
   public String toString() {
     return "J:" + x.getClass();
   }
diff --git a/test/files/neg/t4851/J2.java b/test/files/neg/t4851/J2.java
index c3a7231315..82954d9489 100644
--- a/test/files/neg/t4851/J2.java
+++ b/test/files/neg/t4851/J2.java
@@ -1,10 +1,10 @@
 public class J2<T> {
   T x;
-  
+
   public <T> J(T x) {
     this.x = x;
   }
-  
+
   public String toString() {
     return "J2:" + x.getClass();
   }
diff --git a/test/files/neg/t4851/S.scala b/test/files/neg/t4851/S.scala
index 0a442ac7a9..779ba376b0 100644
--- a/test/files/neg/t4851/S.scala
+++ b/test/files/neg/t4851/S.scala
@@ -5,7 +5,7 @@ object Test {
 
   val y1 = Some(1, 2, 3)
   val y2 = new Some(1, 2, 3)
-  
+
   val z1 = new J2
   val z2 = new J2()
   val z3 = new J2(())
@@ -18,7 +18,7 @@ object Test {
     println(x2)
     println(x3)
     println(y1)
-    
+
     println(z1)
     println(z2)
     println(z3)