syscall: add sigqueueinfo, signalfd and pread
syscall: add sigqueueinfo, signalfd and pread

Signed-off-by: Andrey Vagin <74c05afa918858348d6db8037d82fa8124870113@openvz.org>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

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