headers: list.h -- Add hlist helpers
headers: list.h -- Add hlist helpers

hlist is suitable for hash operations so
extent list.h code. I need it for converter
and this allow me to reuse this header.

Signed-off-by: Cyrill Gorcunov <7a1ea01eee6961eb1e372e3508c2670446d086f4@openvz.org>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

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