Update texinfo documentation backend inside `help' functionality:
    
        - Move "Print action message" and MANUAL_ENTRY verification from
          `texinfo_deleteEntry' functionality to specific functionalities
          (e.g., `texinfo_deleteEntrySection',
          `texinfo_deleteEntryChapter', `texinfo_deleteEntryManual'). 
          
          This code movement is needed in order for both "Print action
          message" an MANUAL_ENTRY verification to happen when renaming
          actions take place inside the working copy.  Otherwise, if both
          "Print action message" and MANUAL_ENTRY verification actions are
          outside specific functionalities, they won't be realized when a
          documentation entry be renamed inside the working copy.
    
        - Revert pending changes on MANUAL_ENTRY before deleting it.