delete the win64 core

Author: MESYETI

source/app.d

@@ -31,7 +31,6 @@ Flags:
 Backends:
 	rm86    - Real mode x86 and MS-DOS
 	linux86 - Linux for 64-bit x86
-	win64   - Windows for 64-bit x86 (Work in progress)
 ";
 
 int main(string[] args) {
@@ -132,11 +131,6 @@ int main(string[] args) {
 							backend = new BackendLinux86();
 							break;
 						}
-						case "win64": {
-							stderr.writeln("WARNING: Unstable backend");
-							backend = new BackendWin64();
-							break;
-						}
 						default: {
 							stderr.writefln("Unknown backend '%s'", args[i]);
 						}

source/backends/win64.d

@@ -148,7 +148,7 @@ class Compiler {
 				auto node = cast(RequiresNode) inode;
 
 				if (!versions.canFind(node.ver)) {
-					backend.Error(node.error, "Version '%s' required");
+					backend.Error(node.error, "Version '%s' required", node.ver);
 				}
 				break;
 			}