Fix broken build.

The fix for d8 readline() broke hello1 and hello2 tests.

backend.native/tests/build.gradle

@@ -414,13 +414,13 @@ task hello0(type: RunKonanTest) {
 }
 
 task hello1(type: RunKonanTest) {
-    goldValue = "Hello World"
+    goldValue = "Hello World\n"
     testData = "Hello World\n"
     source = "runtime/basic/hello1.kt"
 }
 
 task hello2(type: RunKonanTest) {
-    goldValue = "you entered 'Hello World'"
+    goldValue = "you entered 'Hello World\n'"
     testData = "Hello World\n"
     source = "runtime/basic/hello2.kt"
 }

runtime/src/launcher/js/launcher.js

@@ -73,7 +73,9 @@ var konan_dependencies = {
         },
         // TODO: Account for file and size.
         fgets: function(str, size, file) {
-            fromString(utf8encode(readline()), str);
+            // TODO: readline can't read lines without a newline.
+            // Browsers cant read from console at all.
+            fromString(utf8encode(readline() + '\n'), str);
             return str;
         },
         Konan_heap_upper: function() {