Confusing use of variable addCmd in arc_vfs code #4

From Antonio Diaz Diaz

The following is not a bug, but it is confusing.
At line 91 of 'krusader/VFS/arc_vfs.h' we find:

   TQString cmd;      // the archiver main command
   TQString listCmd;  // the file listing option
   TQString delCmd;   // the delete option
   TQString addCmd;   // the add files option
   TQString getCmd;   // the extract files option

But then in 'krusader/VFS/arc_vfs.cpp', 'addCmd' is set to a full
command + option:

     cmd = KrServices::fullPathName ( "gzip" );
     listCmd = "-l";
     delCmd  = "";
     addCmd  = KrServices::fullPathName ( "gzip" ) + " -c";
     getCmd  = "-dc";