LessQt, part 1

- added wrappers over Qt classes for seamless replacement if Qt is not available
- added bstrlib as submodule
- only UEFIExtract works with this changes for now, others will followa bit later

common/ustring.h

@@ -0,0 +1,34 @@
+/* ustring.h
+
+Copyright (c) 2016, Nikolaj Schlej. All rights reserved.
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution.  The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+*/
+
+#ifndef USTRING_H
+#define USTRING_H
+
+//TODO: modify properly
+
+#ifdef QT_CORE_LIB
+// Use Qt class, if Qt is available
+#include <QString>
+#define UString QString
+#else
+// Use own implementation
+#include "../bstrlib/bstrwrap.h"
+class UString : public CBString {
+};
+
+#endif // QT_CORE_LIB
+
+UString usprintf(const char* fmt, ...);
+
+
+
+#endif // USTRING_H