rename directory and namespaces. Modifications below:

    Original directory (Master)    ->             New directory (refactoring)                 Namespace (refactoring)
    ===========================                   ===========================                 =======================

    Xfiles:
    =======

    Util
       |_eXlibris_tools                           xTool                                     xtool::
       |
       |                                          xUtil
       |_cmakeUtile                                   |_cmakeUtile
       |
       |_FloUtil                                      attic
       |_Split                                        attic
       |_doxygen_tools                                attic
       |_tags_tools                                   attic

    Xcrack                                        xCrack
         |_ xCrack                                     |_ src                        ...