message: lumina-archiver: use bsdtar on linux (since backend is not compatible with gnutar)
diff: #include <QCoreApplication>
  #include <QTimer>
  +#ifdef Q_OS_LINUX
  +#define TAR_CMD "bsdtar"
  +#else
  +#define TAR_CMD "tar"
  +#endif
  +
  Backend::Backend(QObject *parent) : QObject(parent){
  //Setup the backend process
  PROC.setProcessChannelMode(QProcess::MergedChannels);
  - PROC.setProgram("tar");
  + PROC.setProgram(TAR_CMD);
  connect(&PROC, SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(procFinished(int, QProcess::ExitStatus)) );
  connect(&PROC, SIGNAL(readyReadStandardOutput()), this, SLOT(processData()) );
  connect(&PROC, SIGNAL(started()), this, SIGNAL(ProcessStarting()) );
  @@ -124,7 +130,7 @@ void Backend::startAdd(QStringList paths, bool absolutePaths){
  args<< "@"+filepath;
  }
  STARTING=true;
  - PROC.start("tar", args);
  + PROC.start(TAR_CMD, args);
  }
  void Backend::startRemove(QStringList paths){
  @@ -140,7 +146,7 @@ void Backend::startRemove(QStringList paths){
  }
  args<< "@"+filepath;
  STARTING=true;
  - PROC.start("tar", args);
  + PROC.start(TAR_CMD, args);
  }
  void Backend::startExtract(QString path, bool overwrite, QString file){
  @@ -162,7 +168,7 @@ void Backend::startExtract(QString path, bool overwrite, QStringList files){
  args << "-C" << path;
  STARTING=true;
  //qDebug() << "Starting command:" << "tar" << args;
  - PROC.start("tar", args);
  + PROC.start(TAR_CMD, args);
  }
  void Backend::startViewFile(QString path){
  @@ -180,7 +186,7 @@ void Backend::startViewFile(QString path){
  while(!tmpProc.waitForFinished(500)){ QCoreApplication::processEvents(); }
  emit ProcessFinished(tmpProc.exitCode()==0, "");
  QProcess::startDetached("xdg-open", QStringList() << newfilename);
  - //PROC.start("tar", args);
  + //PROC.start(TAR_CMD, args);
  }
  //===============
  @@ -226,7 +232,7 @@ void Backend::startList(){
  args << "-tv";
  LIST = STARTING=true;
  //qDebug() << "Starting List:" << "tar "+args.join(" ")+" "+flags.join(" ");
  - PROC.start("tar", QStringList() << args << flags);
  + PROC.start(TAR_CMD, QStringList() << args << flags);
  }
  //===============
  