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/patmat-exprs.scala b/test/files/run/patmat-exprs.scala
index 56e4e01598..7ca5fd3063 100644
--- a/test/files/run/patmat-exprs.scala
+++ b/test/files/run/patmat-exprs.scala
@@ -39,7 +39,7 @@ trait Pattern {
   //
   // type Numeric[T]
   // import java.io.Serializable
-  // 
+  //
   // implicit def compat27a[T](x: Iterable[T]) = new {
   //   def iterator: Iterator[T] = x.elements
   //   def sum: Int = 5
@@ -280,8 +280,8 @@ trait Pattern {
         case Mul(Mul(y, Const(z)), Const(x)) => Mul(const(num.mul(x, z)), y)
 
         case Const(x) if x == num.one => One[T]
-        case Const(x) if x == num.zero => Zero[T]      
-      
+        case Const(x) if x == num.zero => Zero[T]
+
         case Sub(x, Neg(y)) => Add(List(x, y))
         case Sub(Neg(x), y) => Neg(Add(List(x, y)))
         case Neg(Neg(x)) => x