Qt 5 to-do in plugin framework

// NOTE: if you change pattern, you MUST change the pattern in
// qlibrary.cpp as well.  changing the pattern will break all
// backwards compatibility as well (no old plugins will be loaded).
// QT5: should probably remove the entire pattern thing and do the section
//      trick for all platforms. for now, keep it and fallback to scan for it.
#  ifdef QPLUGIN_DEBUG_STR
#    undef QPLUGIN_DEBUG_STR
#  endif
#  ifdef QT_NO_DEBUG
#    define QPLUGIN_DEBUG_STR "false"
#    define QPLUGIN_SECTION_DEBUG_STR ""
#  else
#    define QPLUGIN_DEBUG_STR "true"
#    define QPLUGIN_SECTION_DEBUG_STR ".debug"
#  endif
#  define Q_PLUGIN_VERIFICATION_DATA \
    static const char qt_plugin_verification_data[] = \
      "pattern=" "QT_PLUGIN_VERIFICATION_DATA" "\n" \
      "version=" QT_VERSION_STR "\n" \
      "debug=" QPLUGIN_DEBUG_STR;
...