Fix FTBFS - konqueror side bar build

Thanks to Francois Andriot for the patch!

ConfigureChecks.cmake

@@ -186,7 +186,7 @@ if( WITH_KONQSIDEBAR )
   set( CMAKE_REQUIRED_DEFINITIONS ${TQT_CFLAGS_OTHER} )
   set( CMAKE_REQUIRED_INCLUDES ${TDE_INCLUDE_DIR};${TQT_INCLUDE_DIRS};${CMAKE_INCLUDE_PATH} )
   set( CMAKE_REQUIRED_FLAGS "-include tqt.h" )
-  set( CMAKE_REQUIRED_LIBRARIES -L${TQT_LIBRARY_DIRS} ${TQT_LIBRARIES} )
+  set( CMAKE_REQUIRED_LIBRARIES -L${TQT_LIBRARY_DIRS} -L${QT_LIBRARY_DIRS} ${TQT_LIBRARIES} )
   check_cxx_source_compiles("
     #include <konqsidebarplugin.h>
     int main(int, char**) { return 0; } "