Remove all trailing whitespace

sed 's/[ \t]*$//' -i **/*.d

tests/vibe.core.concurrency.1408.d

@@ -20,7 +20,7 @@ void test()
 		assert(gotit);
 		sleep(10.msecs);
 	});
-	
+
 	t.tid.send(10);
 	t.tid.send(11); // never received
 	t.join();
@@ -43,9 +43,9 @@ void test()
 
 	t3.tid.send(13);
 	sleep(10.msecs);
-	
+
 	logInfo("Success.");
-	
+
 	exitEventLoop(true);
 }