show: Add 'hinting' ability
show: Add 'hinting' ability

The crtools produces not only dump in its internal format (i.e. -- pb),
but also may call other tools to create files with some state (e.g.
ip tool dumps route and ifaddr info, tmpfs will be tar-ed, iptables
utility will produce the iptables-save file, etc.).

The show functionality cannot read these images, but we can guess what
can be in the file provided by its magic.

Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

eabatalov/criu,fbocharov/criu,efiop/criu,biddyweb/criu,fbocharov/criu,gablg1/criu,gablg1/criu,gablg1/criu,ldu4/criu,gonkulator/criu,marcosnils/criu,efiop/criu,tych0/criu,fbocharov/criu,LK4D4/criu,rentzsch/criu,LK4D4/criu,biddyweb/criu,KKoukiou/criu-remote,AuthenticEshkinKot/criu,marcosnils/criu,gonkulator/criu,kawamuray/criu,svloyso/criu,eabatalov/criu,gablg1/criu,rentzsch/criu,ldu4/criu,KKoukiou/criu-remote,sdgdsffdsfff/criu,AuthenticEshkinKot/criu,AuthenticEshkinKot/criu,tych0/criu,svloyso/criu,svloyso/criu,KKoukiou/criu-remote,fbocharov/criu,rentzsch/criu,LK4D4/criu,fbocharov/criu,wtf42/criu,ldu4/criu,wtf42/criu,svloyso/criu,LK4D4/criu,biddyweb/criu,kawamuray/criu,kawamuray/criu,gablg1/criu,biddyweb/criu,gonkulator/criu,AuthenticEshkinKot/criu,marcosnils/criu,rentzsch/criu,biddyweb/criu,gonkulator/criu,rentzsch/criu,eabatalov/criu,efiop/criu,AuthenticEshkinKot/criu,KKoukiou/criu-remote,eabatalov/criu,marcosnils/criu,efiop/criu,ldu4/criu,KKoukiou/criu-remote,eabatalov/criu,efiop/criu,sdgdsffdsfff/criu,tych0/criu,wtf42/criu,biddyweb/criu,ldu4/criu,rentzsch/criu,gablg1/criu,kawamuray/criu,LK4D4/criu,sdgdsffdsfff/criu,svloyso/criu,kawamuray/criu,gonkulator/criu,kawamuray/criu,sdgdsffdsfff/criu,LK4D4/criu,fbocharov/criu,tych0/criu,svloyso/criu,wtf42/criu,sdgdsffdsfff/criu,tych0/criu,AuthenticEshkinKot/criu,gonkulator/criu,eabatalov/criu,marcosnils/criu,marcosnils/criu,sdgdsffdsfff/criu,KKoukiou/criu-remote,tych0/criu,efiop/criu,wtf42/criu,wtf42/criu,ldu4/criu