mnt: Add mi->mountpoint resolving helper
mnt: Add mi->mountpoint resolving helper

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

AuthenticEshkinKot/criu,svloyso/criu,KKoukiou/criu-remote,tych0/criu,eabatalov/criu,wtf42/criu,KKoukiou/criu-remote,AuthenticEshkinKot/criu,wtf42/criu,AuthenticEshkinKot/criu,eabatalov/criu,svloyso/criu,KKoukiou/criu-remote,wtf42/criu,svloyso/criu,tych0/criu,efiop/criu,ldu4/criu,wtf42/criu,efiop/criu,KKoukiou/criu-remote,ldu4/criu,efiop/criu,tych0/criu,efiop/criu,eabatalov/criu,efiop/criu,fbocharov/criu,AuthenticEshkinKot/criu,ldu4/criu,AuthenticEshkinKot/criu,KKoukiou/criu-remote,tych0/criu,fbocharov/criu,ldu4/criu,eabatalov/criu,svloyso/criu,fbocharov/criu,efiop/criu,wtf42/criu,KKoukiou/criu-remote,fbocharov/criu,tych0/criu,ldu4/criu,eabatalov/criu,svloyso/criu,svloyso/criu,fbocharov/criu,eabatalov/criu,fbocharov/criu,tych0/criu,wtf42/criu,AuthenticEshkinKot/criu,ldu4/criu