DMD works on GNU/Linux, samples updated

samples/Hello/Demo/demo.d

@@ -3,15 +3,8 @@ import Hello.hello;
 
 int main()
 {
-  version (GNU)
-  {
-    Hail hello = new Hail();
-    hello.Print();
-  }
-  else
-  {
-    Print();
-  }
- 
+  Hail hello = new Hail();
+  hello.Print();
+  
   return 0;
 }

samples/Hello/Hello/hello.d

@@ -2,21 +2,13 @@ module Hello.hello;
 
 import std.stdio;
 
-version (GNU)
-{
-  class Hail
-  {
-  public:
-    void Print()
-      {
-        writefln ("Hello, World!");
-      }
-  }
-}
-else
+class Hail
 {
+public:
   void Print()
   {
      writefln ("Hello, World!");
   }
 }
+
+