make internal archiver understand haw to extract 'xz'
make internal archiver understand haw to extract 'xz'

amarie-formation/roswell,JulienBoubechtoulaAmabis/roswell,Rudolph-Miller/roswell,fukamachi/roswell,fukamachi/roswell,guicho271828/roswell,amarie-formation/roswell,guicho271828/roswell,amarie-formation/roswell,kubov/roswell,JulienBoubechtoulaAmabis/roswell,JulienBoubechtoulaAmabis/roswell,pradhyu/roswell,Rudolph-Miller/roswell,snmsts/roswell,snmsts/roswell,pradhyu/roswell,roswell/roswell,pradhyu/roswell,kubov/roswell,kubov/roswell,fukamachi/roswell,amarie-formation/roswell,guicho271828/roswell,roswell/roswell,snmsts/roswell,roswell/roswell,snmsts/roswell,JulienBoubechtoulaAmabis/roswell,JulienBoubechtoulaAmabis/roswell,Rudolph-Miller/roswell,guicho271828/roswell,pradhyu/roswell,kubov/roswell,fukamachi/roswell,roswell/roswell,Rudolph-Miller/roswell