re-enable QT_NO_LIBRARY support on Windows

the exclusion came in with the original winCE port. the reason for this
is not clear.

Change-Id: I8cd59d27fcc292186e5eef3238f56bad2cf320c1
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

src/corelib/io/qfilesystemengine_win.cpp

@@ -145,8 +145,10 @@ Q_CORE_EXPORT int qt_ntfs_permission_lookup = 0;
 static QString qfsPrivateCurrentDir = QLatin1String("");
 // As none of the functions we try to resolve do exist on Windows CE
 // we use QT_NO_LIBRARY to shorten everything up a little bit.
+#ifndef QT_NO_LIBRARY
 #define QT_NO_LIBRARY 1
 #endif
+#endif
 
 #if !defined(QT_NO_LIBRARY)
 QT_BEGIN_INCLUDE_NAMESPACE

src/corelib/plugin/qlibrary.h

@@ -46,12 +46,6 @@
 
 QT_BEGIN_NAMESPACE
 
-
-#if defined(QT_NO_LIBRARY) && defined(Q_OS_WIN)
-#undef QT_NO_LIBRARY
-#pragma message("QT_NO_LIBRARY is not supported on Windows")
-#endif
-
 #ifndef QT_NO_LIBRARY
 
 class QLibraryPrivate;

src/corelib/plugin/qlibrary_win.cpp

@@ -46,10 +46,7 @@
 #include "qfileinfo.h"
 #include <private/qfilesystementry_p.h>
 
-#if defined(QT_NO_LIBRARY) && defined(Q_OS_WIN)
-#undef QT_NO_LIBRARY
-#pragma message("QT_NO_LIBRARY is not supported on Windows")
-#endif
+#ifndef QT_NO_LIBRARY
 
 #include <qt_windows.h>
 
@@ -166,3 +163,5 @@ QFunctionPointer QLibraryPrivate::resolve_sys(const char* symbol)
     return QFunctionPointer(address);
 }
 QT_END_NAMESPACE
+
+#endif // QT_NO_LIBRARY

src/corelib/plugin/qpluginloader.h

@@ -44,11 +44,6 @@
 
 #include <QtCore/qlibrary.h>
 
-#if defined(QT_NO_LIBRARY) && defined(Q_OS_WIN)
-#undef QT_NO_LIBRARY
-#pragma message("QT_NO_LIBRARY is not supported on Windows")
-#endif
-
 #ifndef QT_NO_LIBRARY
 
 QT_BEGIN_NAMESPACE